I can't imagine it being a problem with the Viper. I'm right at minimum weight for the FX at 157lbs and use a bag, and if the wind is up I don't even need to fill it up to right the FXone. Most of the time, then theres those weird scenario's where it just doesn't want to come up.

My hulls each weighed 78lbs, haven't weighed the complete boat either but Hobie claims 323lbs, uni+spi. The Viper is almost 40lbs lighter, and other than the length most of the other dimesions are real close.