When two boats share the same hull type — in this case both the Glacier Bay 3070 Cuddy 2010 and the Glacier Bay 3470 Cuddy 2011 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?

The Glacier Bay 3070 Cuddy 2010 carries a rated maximum of 500 hp. Engine data for the Glacier Bay 3470 Cuddy 2011 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Glacier Bay 3070 Cuddy 2010 carries 24 gallons versus 3 gallons in the Glacier Bay 3470 Cuddy 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 Glacier Bay 3470 Cuddy 2011 is rated for 12 passengers, while the Glacier Bay 3070 Cuddy 2010 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Glacier Bay 3470 Cuddy 2011 could be the deciding factor.