A few tips from me. To cut and seal the edges of ripstop pr polyester sail material, I use an olfa rotary cutter blade fitted into a brass fitting which I made, and which clamps to an electric soldering iron. This allows you to cut and seal curves on sails etc very easily but also has other applications, such as running around a template to burn an outline onto wood or plywood which will not rub off as pencil will.
Wanting to reproduce a hull from an old glass fibre mould, but in plastic foam - do not ask - I waxed the inside of the mould well and filled it with expanding gap filling DIY foam from a can. I left it overnight to cure, and it released easily from the heavily waxed mould. I used the foam hull shape as a plug to build a lightweight hull from gummed paper strip, which once removed was later covered with stretch polyester cloth impregnated with epoxy resin. A super lightweight but strong hull resulted.
Bending Perspex. I made a few yacht stands from clear Perspex. These show the boats lines off perfectly. To bend the Perspex accurately I cut a narrow slot in a piece of six mil MDF, mounted the Perspex behind the slot at the proposed bend point, and heated this area with a hot air gun, kept moving and from about five inches. Once hot, the area of the Perspex under the slot will bend easily to whichever angle you require, but do not overheat, practice on a scrap first. Support the Perspex on a piece of MDF as you bend it to keep it flat - and wear gloves too, this stuff gets really hot! Carefully designed, perspex mounts can be used screwed against a wall to give the impression that your boat is floating in space!