Thanks for the info everyone.

Making something similar from clear roofing material is exactly what I was thinking of!

: Ya- corrugated tin. I don't remember where I got the image from. I have
: wanted to replicate this using the clear acrylic corrugated roofing. Just
: haven't had the time. So many boats to build, so little time.

: My father told me how they cut tin roofing on the farm. They anchored a piece
: of bailing wire to a log and the other to a stout stick. Then they laid
: the tin on top of the wire and stood on top of the roofing, on foot on
: each side of where the wire was. Then they pulled up on the wire and it
: would cut a perfectly straight line.

: PaulMon