These two solutions will work well :
Or get your sailmaker to make some new loops with bigger bolt rops on them.
And
I'm using the plastic rouns/square thingies that are used an mono's as battens guiders ...
Several years back I helped a friend do this to his Tiger and it worked perfectly for the additional three years that he owned the boat. He has sold it now so I don't see it anymore.
The stuff he used was : Ronstan PNP 102 (5/16) or PNP 103 (3/8) or PNP104 (1/2)
Here you have a picture of them.
http://www.ronstan.com.au/marine/product.asp?ProdNo=PNP102The only difference between these lugs is the diameter of the slug that will fit inside the trampoline track. Measure your diameter on the you I-20 and chose the right one. These lugs have metal loops to which the trampoline lacing can be secured.
I don't expect these slugs to be expensive in anyway. They are only 50 mm long (2 inches) and weight 8 - 11 gram = 1/4 to 1/3 oz and go over the counter in Australia for about 1.30 AUD = 1 US$ per peice. You'll need about 20 of them. Shipping cost will normal postage as these things are so small and light.
This is propably the easiest and cheapest solution to your problem, Maugan20.
That is if you were not using the ignoring option of this forum and could actually see my posts. Ahh well, I just guess you just have to continue fiddling about with your troubled setup, unaware that a perfectly good, cheap and proven solution is available. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
Wouter