I have flown a seamaster 120 for 2 summers now. Excellent flying plane with no tendency to skip or plane sideways (unless trying to turn at higher speeds). Make sure you have a 1/4 inch balsa keel (120 size) running down the center. Weights in about 23 lbs and flys well on a quadra 35. My album has a picture of it just breaking water with rudder still creating wake.