When two boats share the same hull type — in this case both the Tiara Yachts 3200 Open 2011 and the Tiara Yachts 3900 Convertible 2008 are deep vee 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?

Size is the most obvious dividing line here. The Tiara Yachts 3900 Convertible 2008 measures 39,0 feet overall (2008), giving it roughly 3,9 additional feet of deck space compared to the Tiara Yachts 3200 Open 2011 at 35,1 feet (2011). Weight tells a clearer story for trailering families: the Tiara Yachts 3900 Convertible 2008 tips the scales at 30 125 lbs — 28 530 lbs less than the Tiara Yachts 3200 Open 2011 at 1 595 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The Tiara Yachts 3900 Convertible 2008 tops out at 575 hp. Engine specs for the Tiara Yachts 3200 Open 2011 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Tiara Yachts 3900 Convertible 2008 carries 475 gallons versus 256 gallons in the Tiara Yachts 3200 Open 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Tiara Yachts 3900 Convertible 2008 is rated for 12 passengers, while the Tiara Yachts 3200 Open 2011 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Tiara Yachts 3900 Convertible 2008 could be the deciding factor.