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thedoor said..Epigishmog said..thedoor said..Epigishmog said..
Hey guys,
I'm running into some issues with my foil setup in strong wind conditions, specifically in the 25-30 knot range, with gusts up to 35-40 knots.
For light wind, I use the Slingshot Freestyle 115 paired with the Slingshot Phantasm 730 PFI and PS400 stabilizer, and it works great. Once the wind hits around 17-18 knots, I switch to my 87L Slingshot Freestyle with a Sabfoil Medusa 699 (880 cm2) and S399 stab. That setup feels good and controllable up to about 25 knots. For 25 knots I use a Severne 3.0 sail with it and can cruise, jump, and pass all gybes comfortably.
But once the wind climbs into the 30-knot range, I start feeling seriously overpowered. I'm still flying and passing my gybes, but the ride becomes uncomfortable and not much fun. I'm 77 kg, fairly experienced (steady gybes, small jumps, passing some 360s), and this setup just feels like it's hitting a wall in high wind. The other day, I even tested the Phantasm 730 PFI again in these conditions, thinking the added stability might help absorb gusts better. But honestly, it felt worse.
I know that many of you switch back to fin windsurfing when the wind gets strong, and I actually ended up doing the same on a few sessions when foiling stopped being fun. Still, I'm curious, is there any foil setup that actually works well and feels good in these conditions?
So here's my main question:
How do you guys approach foiling in strong winds (30+ knots) on smaller boards like the Slingshot Freestyle 87L? Would you go with a smaller foil to reduce lift and improve top-end speed (even if it gets harder to control pitch)? Or stick with a larger, more stable foil to handle gusts and maintain control? I know the general rule is to downsize the foil as wind picks up, but in nuking conditions, gusts can easily be +10 knots over the average so maybe stability is more important than minimal surface area? Curious to hear how others are managing similar setups or conditions. Any input is appreciated!
First of all I slept on the 699, it never got in the rotation. But recently I have been running FS87 and 699 and it's a sick combo. Super surfy and good range.
Second, Azymuth/JJ seems to be the resident expert on swellstyle foiling on small front wings.
Third, is 30+ knots ever comfortable. If you are making gybes in those conditions I would say you set up is great.
My thoughts, although not super relevant cause I doubt I ever foiled in 30 knots, and if I did I am sure I wasnt comfortable:
I dont find that my big wings become unmanageable as the wind picks up, but I know race guys will slide they sail universal forwards when wind picks up so maybe dabble there. If anything, I like that my foil speed limits itself in strong wind so all I need to worry about is my pitch and sail control and I can slow way down in my gybes to adjust to the water state.
@thedoor, the impression I've got with the Sabfoil WM699 is that front foot pressure builds up too much as speed increases, which is great if you want to pop and jump, but it feels unstable at higher speeds, That's one of the reasons I've been looking to try something with a different profile (just ordered a SS PTM 730 HA - 665 cm2)
And yes, I can make my gybes, but when sailing in a straight line I'm still going fairly slow because I can't properly close the sail. As a result, I'm also not able to hook into the harness lines.
KDog said..Wow 30 kts for me usually means out of control on my small stuff ptm799 {725sq cm) 340 tail and 3.4 or smaller sail. In that kind of wind a small span front wing makes sense 700 mm or less .If your making things work in 30 knots I know that the gusts have to be scary

These are the kind of conditions we often get when the Tramontana blows down in the south of France. I sail in Leucate, where the wind is offshore and super gusty, but on the upside, the water is mostly flat with just a bit of chop.
I've just ordered a second-hand Slingshot Phantasm PTM 730 front wing (665 cm2, high aspect). Perhaps this is too small as compared to the Sabfoil WM699 (880 cm2), but I'll give that a try and report back if it makes a difference. I have the PS400 and PS325 stabilizers.
The PTM 730 is gonna be well worth trying, I reckon. I don't think it will be too small for what you are trying to do. please let us know how it works out.
Hey guys,
As promised, I tested my new small front wing in mild-high wind conditions yesterday. The wing is the Slingshot PTM 730 HA, with a surface area of 665 cm2
Conditions:
- Water: Flat
-Wind: 20-30 knots, very gusty
- Sail: 3.7
- Board: Slingshot Freestyle 87L v3
- Foil Setup: Slingshot Phantasm W103 mast / PS400 stabilizer / PTM 730 front wing (665 cm2)
This was my first session with this foil, and I was greatly surprised by how well it performed. I expected some trouble getting up on foil with the 87L board since I start underwater and the board doesn't offer much surface area for planing. However, despite requiring a good bit of speed to lift off, it worked flawlessly.
Once up, the foil felt very stable, which was unexpected given the smaller front wing. Roll sensitivity was a bit higher, but not in a way that made control difficult. I used to ride a freerace foil a few years ago (NP RS Flight Evo F4 - 730 cm2) before switching to freestyle boards, so that might have helped, but I believe the PS400 stabilizer is the main reason for the stability.
In gusty wind, this foil really shines. Unlike larger foils, which can feel overpowered or twitchy, the PTM 730 absorbed gusts by simply accelerating. It made for a very comfortable and smooth ride, and I felt much more confidence at high speeds compared to my Sabfoil Balz Pro 699 (880 cm2) I didn't record GPS speed, but the acceleration and top-end felt noticeably better.
Trim : I did have to move the foil mast back by about 2 cm. Initially, I had too much front foot pressure during acceleration. After adjusting, the balance felt perfect, and the ride became much more stable.
Gybes: These were an absolute highlight. Thanks to the extra speed, carving long-radius gybes felt incredibly fun and controlled. I expected the foil to be twitchy mid-turn, but it was very forgiving and easy to handle. I just made sure to go in with plenty of speed.
Jumps: This foil makes jumping a blast. The speed gives you that extra pop, and the landings felt smooth and stable. It's one of the reasons I'm really starting to love this setup.
Conclusion: I'm really impressed with the PTM 730. It's going to be my go-to foil for 20+ knot days with the 87L freestyle board. It's fast, stable, responsive, and turns/jumps like a dream