When two boats share the same hull type — in this case both the ProKat 3660 Express 2008 and the ProKat 3660 Sport Fish 2007 are catamaran designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — ProKat 3660 Express 2008 at 37,0 ft versus ProKat 3660 Sport Fish 2007 at 37,0 ft. At 148 lbs and 148 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The power gap is worth calling out. Rated to 700 hp, the ProKat 3660 Express 2008 has a 50-hp advantage over the ProKat 3660 Sport Fish 2007's 650-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 4 gal and 3 gal — so range won't be a tiebreaker here.

Both boats are rated for 11 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.