I'll try. Describing what I feel on the water is not always easy and sometimes stuff just comes out.
I'll try to approach it from what feels "right" to me.
Say I'm getting on teh plane in well-powered or over-powered conditions. I'm out tehre for a ong time, my arms are a bit tired, or I just want to conserve energy. I don't want to hang onto the boom for a long time while a tiny board decides to get on the plane.
So, I'll hook in straight away, as soon as teh board is heading off downwind, before i'm properly planing, and sheet in.
At that point I have too much power in the sail for my speed, so a catapult is imminent, like falling off the front of a skateboard (which I do a lot while learning tricks).
I'm face with 2 choices. I can either sheet out or I can direct that power into accelerating the board. That's what I choose.
I commit my weight to the harnes and stay sheeted in, and use my core muscles to tilt my pelvis do I can straighten my font leg and drive the board forward, using the rocker to jet i onto the plane.
It's critical to be able to do this at a place like Currumbin when the shorebreak down at Palmy is slamming into you and you want to keep the power in the sail to get going between waves. If you un-hook and sheet out there, you just get flogged. You have to stay hooked in and keep the pedal down hard. Often as I come over a wave, I'll land tail deep nearly stopped, but fully sheeted in, and just drive it out again.
So, back to hanging off in over-powered conditions. If you are hanging off too far, you are not driving the power through your core and into the front leg. You will be bogging along too slow with too much fin pressure, on the verge of spinning out, and closing the leech at the top by pulling the mast sideways.
I know Sue is a light-weight, and is gutsy enough to go out in conditions that over-power her, but to jump in those conditions, you need to have the board running freely and be muscling the sail with your upper body and core.
It's that core cohesion that lets you survive a landing that's too down-wind without going over the bars.
A ski instructor in a powder lesson explained taht to me.
She made us form our body into a tight "C", then went around trying to break it by pushing on our shoulders. She wanted us to stay curled into that tight cohesive "C", critical for sking the pow-pow or steeps. If you stand up and open up, you lose control and die.
It's exactly the same thing here.
Addit.
When I say "straighten the front leg", I don't mean to lock it out. Remember this is a high-wind, rough water scenario here. My knees are always bent, esp in that first few secs where I am hooking in and not moving fast. I need to hang on the harness to get mast-foot pressure to balance the board. I'm almost pulling the tail of the board up to me sometimes if it's well windy and I'm really over-powered.
I think one reason the long harness line advocates have been vocal, is that the longer lines let you bend your knees more with your weight over the board, and maintain a strong core.
The classic "7", looks kinda cool on dead flat water, but is an intrinsically weak stance that will break very easily, and is total crap in rough water.
A few people have noted that Barn should not care about his line length, as he's never hooked in anyway. I think the editing gives that impression, but I'll bet he's hooked in every second he does not need be out.
Experienced wave sailors pretty much only unhook when they are on the wave or going for big moves. Takes too much energy to sail with your arms.
GusTee said...KenHo - Can you please explain further what you meant below, the part about going too slow for the power you have? I'm trying to picture the stance that would cause this. Cheers.
KenHo said...
If you are hanging too far off the side, you are not driving the power of the sail through your legs too, which means you are going too slow for the power you have, which is a good place to start a catapult, but not a good place to jump from.