Well, in that case
You could cut an opening in the existing hatch, then attach a piece of 1/4" or 3/16" Plexiglass (acrylic) or Lexan (polycarbonate) on the underside using 3M 5200 adhesive sealant. Ideally, the clear plastic should be about the same size as the hatch, and I'd leave at least three inches around on all sides to make sure adequate surface area is available for bonding. The last thing you want is to step on the pane and pop it into the forepeak.You could also do the reverse and affix the clear plastic on the outside, but you'd need to bevel the edges to make it look neat. Any decent plastic shop should be able to do it for you for under $50 if they have a bit of scrap that they would otherwsier toss. I've dabbled with similar projects for the companionway boards. Good luck.PeterH23 "Raven"