Oh sorry,
To clarify, that video shows an industrial system that automatically aligns itself while winding. I'm working on a homebrew solution for cheap.
My foil is approximately 54mm wide, and the sandwich sheets are 56mm wide. I need to keep the deflection across the 1m wind less than 1mm either way (The 1m length of foil cannot "drift" more than 1mm either direction during the wind... Meaning I have to align it pretty well from the beginning)