I just purchased a Viper 830 and need to upgrade the running rigging. I'd like to do this over the winter, but am reluctant as I wont be able to sail the boat, to see if the current rigging lengths are correct. I measured the old sheets and they are 55' w/ 12' of taper each, which seems on the short side. Could the peanut gallery please chime in with thoughts or any riggers with a best practice method for determining length please pipe up? A internet search turns up 2x boat length for symmetrical kites and 2.5 boat length for asymmetrical kites. The Viper is 28' long and we companionway launch the kite. Thanks!