Hello jim
I have a mystic 29. This is the best boat out of the box i have seen. You can make this boat handle great by
moving batterys around move the strut up or down a little. My boat will turn on a dime. I run a octura x445 with no
heat problems. I do have a set of those 7.4 trungy batterys you asked about they work great. Good power. and run time