Hey Timax, I put leading edge tape on the keel of my boat and the problem I had when doing beach launches was the hull wouldn't slide ,it was like someone had pulled the handbrake on.Some mates and I did a long paddle a couple of weeks ago with very steep beachs and some heavy shore dumps to get through and I couldn't get it to slide.I ended up ripping it off as me mates got sick of having to give me a push all the time,it was the 6" width but it was all i could get .Felt like the boat paddled faster with it off,could have been psycologicol though,