When two boats share the same hull type — in this case both the Tahoe Pontoons 20 ft. SE-B Fish 2011 and the Tahoe Pontoons 21 ft. LT 2012 are pontoon 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?
Size is the most obvious dividing line here. The Tahoe Pontoons 21 ft. LT 2012 measures 21,0 feet overall (2012), giving it roughly 19,0 additional feet of deck space compared to the Tahoe Pontoons 20 ft. SE-B Fish 2011 at 2,0 feet (2011). At 18 lbs and 18 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.
Both boats share a closely matched power ceiling — 115 hp for the Tahoe Pontoons 20 ft. SE-B Fish 2011 and 115 hp for the Tahoe Pontoons 21 ft. LT 2012. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.
Both boats are rated for 10 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.
Bottom line: The Tahoe Pontoons 21 ft. LT 2012 at 21,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Tahoe Pontoons 20 ft. SE-B Fish 2011 at 2,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.