The Pro Boat Hydros are good First Boats the Dynamite .15 is a dependable easy to tune engine If Properly Broke in and Maintained.
Like Every Other nitro engine out there It Must be broke in before you will see any real performance or consistency from it, but with a little time and tweaking you can get that boat with the stock .15 up in the high 30mph range. When it gets To Slow for ya you can upgrade the .15 to one of the better .18's and get it up over 40mph.
But they don't do well in choppy of ruff water.