I tried it but the rope would stretch once wet and things would sag.
Thanks for the reply. I was planning on using Spectra or Dyneema if I tried it and that should solve that problem. I was also planning on installing grommets but realized that probably wouldn't be good. It would put all the force just on the grommets rather than being spread out over the width of the tramp via the rod that the original straps go around. Maybe just melting a hole next to that rod for each place that the lace went through would be better?
My goal is for my first mate to be able to deal with the tramps on her own. As it is, with the buckles "almost" tight enough, she can't pull the strap any tighter after installing them. Nor can I without the use of a tool to get a better grip which would likely damage the straps. With the buckles tight enough, she can't snap them together to start with and I find it very difficult.
I do have another idea that I will try tomorrow (it's looking like an outing is possible after months of glaciation lol)...that is to loosen the straps all the way before installing the tramps. Then after installing them, pulling them tight all in one motion.