Hello Joe: My AUW is approx. 9 lb, I used a spring scale before I took it to the lake-not sure how accurate it is. I'm still having problems getting this plane to ROW. Float to wing incedence is 2 deg, step is 1/2 to 3/4 inch behind Cof G. The day the pics were taken it was quite windy and rough. I knew I shouldn't fly but I thought it might be the last chance. So that day it lifted with no problem, but as I made the downwind turn the wind blew her down and she skipped off the water once and then caught a big wave into the float tips. You can guess what happened-tore the mounts out of the fuse which took about 2 hrs to repair. Tried again yesterday and couln't get her to ROW. The lake was a litlle less rough than in the pics but the wind was far less. Next week may be my last chance-I'm thinking I should have stuck with flying boats, might be my new winter project( looking at the LG Neptune-anyone have experience with this craft?) I'm running an OS46fx with an 11x5 prop. I wonder if I'm underpowered?