I've got an ST ARF on floats. Nice flying plane but that yellow shelf paper covering sucks. After a handful of float flying, the covering is comming up all over the place. Also, be carefull of the large stabalizer, there is only balsa sheeting around its saddle. Mine managed to flip over taxing in a strong cross wind and broke all the balsa around the stabalizer. I would agree about power, I've got a Magnum .80 four stroke and even on floats, it's got plenty of power.