When two boats share the same hull type — in this case both the Starcraft Marine 168 Pro Troller 2012 and the Starcraft Marine Islander 221 I/O 2010 are modified vee designs with aluminum 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 power gap is worth calling out. Rated to 220 hp, the Starcraft Marine Islander 221 I/O 2010 has a 160-hp advantage over the Starcraft Marine 168 Pro Troller 2012's 60-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The Starcraft Marine Islander 221 I/O 2010 is rated for 8 passengers, while the Starcraft Marine 168 Pro Troller 2012 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Starcraft Marine Islander 221 I/O 2010 could be the deciding factor.