Well, I finished up my GP .40 J3 this spring. Flown off the land a dozen times or so while I finished up the GP float kit. Flew off the water for the third time this weekend. Was up in the 1000 Islands, Alexandria Bay NY, behind Bolt Castle. Finally had the digital camera with me. Wind was from the NW at 7-11 mph.
It's the .40 kit...Full wing, standard servos, OS .52 FS running a APC 11x7.5. Will get the scale out this week. Takes full throttle to get off the water, 2/3 throttle once she is up to fly comfortably. I fly less than half throttle on land. IMO, this engine is perfect...the .70 would be too much.
Water rudder on the floats isn't in yet, I won't fly again w/o it!
If anyone has questions...I'll try to answer!