I just ordered a roll of 1.75 Lash it for my tarp ridge line and guy lines. I'm planning on using a continuous ridge line with prussiks for ease of centering.

My question is, would there be any advantage to using shock cord as the prussiks to help with wind or slack due to stretching? In Oklahoma, it's not uncommon to have 25 mph winds and up. and I don't want my tarp to get pulled by it.

Also, if I use shock coord prussiks, how many wraps do you think would be best on to Lash it?