: Is it because of the risk of glue residues from the tape that I
: have to wait until the first layer is completed?

: I have actually already glassed the bottom of my kayak including
: the football. I did that without using masking tape, but the
: edge of the football got a little messy, because when I dragged
: the squeegee across the the edge of the football, strands of
: glass were pulled out.
: Later I'll have to do other reinforcements, so I was hoping to find
: a better way to do them.

: Palle Dam

You can use the masking method on any bit that has gone off, it is just that if you try masking cloth that is wet you are going to have a job getting it off again. Who knows, it may even work, I don't know if it has ever been tried.

How about doing a test on a scrap bit of ply and letting us all know if it works?

Et