OK, I'm ready to choose the line to use for taperable(by me, hopefully) mainsheet. Polyester covers(Crystalyne, V-100, Warpspeed, Endurabraid) claim longer life at the cost of greater water absorbtion. Will the life of a polypropylene cover(Ultra-Lite, YaleLight Competition,Flightline) be noticibly shorter(particularly where it's cleated repeatedly with the main fully in)?
I'm assuming that all these are strippable, is that correct? Any of them noticably easier to taper for a novice?
Any preferences amongst these brands or others? 5/16" or 3/8" (using 10 to 1 blks on a F18HT main)?
I haven't come across directions on constructing split tails yet, anyone know where to point me?
Thanks again for all the help!

dave