When two boats share the same hull type — in this case both the Manitou Pontoons 20 ft. Oasis SHP 2010 and the Manitou Pontoons 24 Encore Pro Angler Series 2011 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 Manitou Pontoons 24 Encore Pro Angler Series 2011 measures 24,8 feet overall (2011), giving it roughly 4,0 additional feet of deck space compared to the Manitou Pontoons 20 ft. Oasis SHP 2010 at 20,8 feet (2010). At 248 lbs and 282 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 300 hp, the Manitou Pontoons 24 Encore Pro Angler Series 2011 has a 125-hp advantage over the Manitou Pontoons 20 ft. Oasis SHP 2010's 175-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Manitou Pontoons 20 ft. Oasis SHP 2010 carries 34 gallons versus 28 gallons in the Manitou Pontoons 24 Encore Pro Angler Series 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 Manitou Pontoons 24 Encore Pro Angler Series 2011 is rated for 13 passengers, while the Manitou Pontoons 20 ft. Oasis SHP 2010 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Manitou Pontoons 24 Encore Pro Angler Series 2011 could be the deciding factor.
One place where both boats are genuinely identical is tube construction: both run 3 aluminum tubes at 23" diameter. That shared spec means stability and buoyancy characteristics are closely matched — the ride difference you'll feel between them comes primarily from deck length, weight distribution, and motor choice.
Bottom line: Choose the Manitou Pontoons 24 Encore Pro Angler Series 2011 if your priority is putting more people on the water — it handles 13 passengers and at 24,8 ft it has the deck room to back that rating up comfortably. The Manitou Pontoons 20 ft. Oasis SHP 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.