the funjet can handle a lot of wieght,it was a breeze to fly with the 4s4400 pack,but it was lighter with the 5s 3300 packs,plus faster,i land on grass so i didnt make skids for it,i would recomend just flying on grass.i didnt have any problems with the het motor.but like with any fast setup you dont wanna fly full throttle all the time,10 sec bursts at most.i crashed my funjet,so i will be running the same setup in the next one and i will glass it since i just learned how to,i think glassing the wings will solve a lot of flight issue's