I'm looking for the 'lamp shades' also, have to think about the PVC. At first blush, I'd think it's too dense, but maybe the more directional lighting would be desirable?.
As to those hot, hot tubular bulbs, we had draperies on the boat when we bought it. The bulbs did a great job of burning the fabric. I'm amazed the boat never went up in flames. We did a pretty easy changeover last year, two guys, about 3 hours, to rope lights. We fastened them inside the valance as low as we could, clamping with plastic cable clips every 8" so the rope lights wouldn't sag. They give good light and we don't have to keep extra marshmallows on hand for the bonfire.
JIM
Alexandria, VA
1989 32' Sedan
'Gammelby'
Friendship, MD