for those with NP foils, or any modular foil that comes with a T-grip tool. I bought this T40 screwdriver and it is so much faster. T-grip tool still good for final torquing, but screwdriver is way faster for coarse assembly.

I've got the same one! But it's black and white. Stainless steel.

Aldi cordless drill, assemble 1min

Been doing it from day one. Was using interchangeable magnetic socket head cheapy screw driver & found a torx screw bit to fit in the end.
Also I use the T handle to tighten the screws with one hand only.
The mast I tighten hard due to its longer threads. Then the wing with less force & then the tail wing with the least force that would be equivalent to using just a screw driver.
When dismantling I use the T handle with the longest lever to loosen all bolts before using the screw driver again to remove them.
Never had a problem yet.

Yes you're right Colas. I rinse my foil down well with freshwater before any tools touch it.
Then the tools are dried either with a cloth or just sitting in sun as I pack my gear away.
I do coat them in white lithium grease spray every time I lubricate the bolts. About once every fortnight to a month. Then wiped over with a cloth.
And yes they are showing signs of surface corrosion but will last a long time yet.

Does anyone use a bike torque wrench, like ones 2-8nm. All bolts have a breaking point. I don't use one but know someone who does and he said he was way overtightening the bolts. I have broken the small M6 bolt for the front wing on my slingshot foil. I think part of it might have been poor bolt quality aswell.

I use a stainless drill bit.

www.stainlesscentral.com.au/shop/fischer-anchormark/drive-bit/torx-30-drive-bit-50mm-long/