Nautique 210.
Dry weight of boat is 3200, so guessing boat and trailer to be a little over 5k.
Pulled it up to Austin recently and it did great aside from the 9 mpg.
I've ran both the P3 and currently the Primus IQ in the Ram above.
Great controllers. I think the P3 is overkill for anything you'd tow with a Runner....and the Primus IQ works just as well without all the tech and settings I've never used....for half the cash.
Buy with confidence. I tow a lot, from my above current setup, to my crawlers on car trailers, toyhaulers, enclosed trailers, etc.
Until you get into the hydraulic integrated controllers....the Tekensha's are GTG!