I had one of the larger engines in mine,and I didn't want to go through the hassle of swapping it out for something milder.Instead I opted to toss that aluminum gear and install a set of 1/4 scale Cub floats.This makes hovering more difficult,but that was alright,cause I was getting bored of just watching it hang there with such ease.Later I added some water for ballast into the floats (about 1 gallon each side)
With good entry "waterfalls" are outrageus,but are hard to stop! actually any manouvre is hard to stop.Tomorrow I will add more ballast and try high speed blenders.