So I recently purchased a '17 20trx. I'm coming out of a stratos 294 evolution. Seems like my stratos cover had a better fit than the Triton cover. I've seen yalls pictures of how tight the covers fit on your triton, but mine seems to have a lot of slop in it. How do you go about getting the tight fit? It came with the ratchets and white rope, but I can't seem to figure out what the white rope is for. I used the pole that comes with the boat that adjusts for the cover and tightened the ratchets, but it still has a lot of slop.