The AFS tool looks great. I used something very much like that for hex/Allen bolts. It was a bit too big for foil use though and the allen key I had was an inspiration when I started working on the Gyrokey (but it ended up being quite different, but still has that 3-wing star shape). If the AFS tool is small enough and corrosion-proof, then that's great.
The Gong tool is also interesting. It's a good design for a pocket tool, but maybe not ideal for your day to day assembly and disassembly of the foil. Having the torx keys at one end gives you a lot of torque on them, but you're not going to have a fun time if the screw requires a lot of turns to fasten/unfasten. The foot strap tool has the least torque and I think that's just a recipe for trouble (in my experience, footstraps need to be tightened pretty hard). Definitely thumbs up for something light (Titanium!) and small (it's flat!) that you can carry with you on the water. It's not exactly cheap, so don't lose it!
The best of both worlds is to have the Gong tool with you on the water (and hopefully you never need to use it) and the AFS tool for use on the beach. If the AFS tool is small enough, then that could be your portable tool as well.
I wish we didn't have both T40 and T45 heads on the bolts though, but I guess it's too late for that now...Here's a link for the hex key tool that I used. The listing doesn't say anything, but I have had them for a couple of years and there's no rust on them at all, so I guess they are stainless steel. The tool is just a little wide for comfort for mast track bolts and they didn't have a version with the exact three sizes I needed, so I had two different sizes in my kit:
s.click.aliexpress.com/e/_onVPVCs
