just thought I'd share some experiences in case anyone's in a similar situation and still on the fence.
I Just quickly installed a front strap on my old board (6'5 x26.5") because I wanted to see if footstrap plugs is something i want on my new one (before I go and put all the deck pads on). Quick disclaimer, I'm still learning on foil. I can turn (ish), cut back (ish) and pump to the next wave but always muck up the turn and miss it. I am however, more than used to footstraps after best part of 25 yrs on windsurf/kitesurf boards. Therefore I thought it was going to be a no brainer for me but not necessarily the case. Here were my feelings after one session.
- Obvious really but I realised that most of the time, unlike a kite/windsurf board the foil is pushing the board up into the bottom of your foot anyway so there's no real benefit when you're just going straight. also straps are partly for hitting chop arent they... doesnt happen on a foil.
- There is some benfit on turns... but I think only if you're really cranking it. Not sure that style is for me and I think swooping rather than cranking is where im headed.
- I noticed after a few waves i was already developing a bad habbit of lifting with my front foot (in the strap) and leaning back to bring the nose up when it was slowly drifting downwards while on a wave.... as opposed to pushing down with my back foot. Difficult to explain in words (and it may just be my bad habbit) but this just felt weird and not as nice as the little burst you get from weighting your back foot.
- pumping there was no magic turbo boost (that Id hoped for). I dont think lifting the front foot is necessary... the foil comes up on its own. Its all about unweighting and any sudden jerky upwards pulls from the footstrap isnt going to help. Maybe on a tiny 4ft board it would help get you out of a hole. It definitely wasnt any worse than without straps... but i was expecting magic
- on takeoff perhaps it helped get you up on foil a tiny bit quicker... but nothing that you cant make up for with good technique and a well timed pump. Also, whilst it didnt happen to me in an hour, eventually you'll muck up a takeoff due to faffing getting your foot in the strap.
- When waves get a bit steeper and wall up down the line i did feel a tiny bit more vulnerable than without straps. Thats probably because i only had one strap though.
Admittedly I should have stuck with it a bit longer but the decision for me is no straps for now and I wont bother gouging out holes in a freshly laminated board. Decision maker for me was the bad habbit point above. I lost a bit of the feel/flow of riding the foil by trying to cheat lifting the front foot all the time. Maybe strap could have gone back an inch but I know its exactly where my foot would be without straps.
It's a controversial subject but I know 'without straps' is generally the aussie approach so im hoping for a bit of support here

You'll notice I havent got the balls to post the same on an american site. I prefer how it looks in vids (James casey, Keahi etc) and I've also got a tonne to learn on my prone foil board so as a side point i dont want to add complication in changing between the two.