Went out over powered,too lazy to change down. Second beer now and can feel I will be sore for a few days.
Upside was getting on foil was instant.

Legit waist harness or hook on waist leash?

I ride with a harness all the time can't really imagine riding 100% without one.I just use simple dakine maniac hook in my waist leash webbing works grea hardly know it's there,and duotone harness lines are excellent adjustable.When getting in close to wave zone just unhook and let her hover.

I think a harness would make overpowered conditions more difficult. It's easy to let the wing self adjust to stupidly strong winds and let the canopy flutter. Things only get messy when you load the wing too much and try to force it to do things.

I would like a harness for extended upwind runs. Those are the only conditions where you want to load the wing and keep it loaded for an extended time. I've seen a video of Alan Cadiz doing a windsurf style water start on a small board hooked in to a wing. That might be useful too.

At the moment I am not game to have anything hard that could knock holes in my board. My early kite foil board got lots of chips and cracks in the rail from the harness hook and it's not something I want to repeat with a fragile SUP foil board.

I'm hoping that a purpose built wing surfing harness will appear on the market with a composite hook that is easy to use and won't damage anything.

PS For me the worst thing about very strong winds is being trapped in the water trying to stop the wing committing harakiri on the upturned foil.

One of the main things I like about winging compared to kitesurfing or windsurfing is the simplicity and freedom.
No lines, no mast and boom and even moreso no harness, which allows complete freedom of movement for fine adjustments.
Unless I wanted to do a 20km upwinder I wont use mine again.
Each to their own though.

Yeah one of the best aspects is no harness and as a side effect I'm now stronger when I windsurf and need to pump and as you get older keeping strength is so important ??

I only use mine for long upwind tacks...but i always wear it because my right shoulder gets tight sometimes and hooking in helps it loosen up without going in or stopping.
I also admit that i like the feeiing of having my lower back,stomach and kidneys kind of protected from carbon swords :)