I got one better on this.

I never used bowlines in my spi sheet. Just plain figure 8 knots on both ends of the sheet after they have been run through the spi clew in opposite directions. Then I have a small line pulling both sheet lines closer together.

The net effect is that you have a smooth (continious) line on the trampoline and the small line near the spi clew prevents the clew corner hangin up on anything.

Best of both worlds this way. It is very easy to removed the spi from this setup and the only drawback is that the spi sheet stays on the boat. Although it is not hard at all to undo the small line. Getting it hooked up again is the hard part.

But for the worlds I'm going to leave my spi sheet on my boat for the whole week so no problems there ! For recreational sailing I'm working out a quick fix so that the sheet can be taken of the boat easily as well. Im think about stitching a permanent opening in the spi sheet and have the small thin line lead the thicker mean line. I expect this to work out well enough. Pics later.

Wouter