Hi, Bill --
We also have a St. F, so I'm very familiar with your set up. You can get a variety of sail slides that will work, from the cheap
plastic to the Ronstan Heavy Duty (expensive, but tough). We opted to keep using the plastic ones and just put extras in along each rail, so that if one broke I wouldn't have to restring the entire tramp, just one side.
I'm skeptical of using bungee cord, as the UV and salt water
will destroy them in fairly short order. We've been using 3/8 nylon twisted, as it provides very good shock absorption and is resistant to both the UV and salt
. Appropriately whipped, of course. It is also easy to replace.
I just made it a practice to always replace the tramp rope
with every haul out
. That also makes it easy to check on each slide and replace as necessary. It's a job that only takes a couple of hours at most and it gives me peace of mind. Even if you replace each slide, you're not out that much.