I don't like them all that much and I haven't used one in years, mostly because they're all for shortys and they usually have a kick block that I don't like. But I've had to go back to trying one because of a bad habit I can't seem to break when I'm paddling.
I rest my curled up right toes at the back of the board and it tends to wear away all the wax, so at the end of a long sesh, with lots of paddling, I go to stomp on the tail and my foot slips off because I've worn the wax off it.
I tried changing the way I paddle, but nothing seems as natural so basically I've given in and gone back to a tail pad.
Because I don't want one with a kick block, I got a big sheet of the stuff from a place that sells 666s and wind surfers, I've probably got enough left over to make another half dozen.
Oh, just in case you're wondering, nobody I know saw me go into the 666 shop, but just in case, I made sure I wore a Groucho Marx disguise.