hi ihave hookeed my snotter on a 16" lenght of abs slipped over the mast on my previous coresound 17'. choose abs abt 3/16" thick by2" to 2 1/2"diameter that tubing have to be smaller than your mast, remove abt 1" strip wide strip from tubing,the opening will permit the tubing to go on each side of your mast track ,to do that heat your tubing in water, might need woodeen block to keep it open to slipp over your mast.to hook your snotter lay a 3/8 rope lenghtwise on front tubing ,ma 1 or 2 loop for snotter ajustement, glue the rope with epoxy and fiberglass.your block will pull even on on mast and never come out , you can reduce lenght of tubing 6" to10" ,but it will not be possible to put 16" wooden dowell abt 3/4 diam along side the tubing to protect yor mast track and sail from spritt abrasion dowind. mes 2 cennes hi fern