I agree with KenC !
Scrape , not sand, and as soon as possible. Much easier when epoxy is still in the soft stage !
You get the best effect when the bias strips are applied OVER your cloth ! Otherwise you are thinning the main cloth coat. Not good.
Looks great so far !
Jim
fiberglassing the stems
Re: fiberglassing the stems
Keep your paddle wet and your seat dry!