has a "Flex O Fold" folding prop. It is considered the best of the geared folding props. It is SUPER streamlined...
A few years back Practical Sailor, along with help from a test lab at MIT did comparisons of many props of equal size... (this is square inches of blade surface, NOT diameter).
What MIT found, was that in forward, the Flex O Fold was hands down the most efficient prop made, bar none! This included comparison to a Max Prop, and a "Michigan Wheel" fixed, three bladed prop!
They defined "efficiency" as the amount of thrust = boat speed, delivered at a given fuel consumption
In reverse, the Flex O Fold was only so so. It was better than the old Martecs, but not nearly as good as the Max Prop. (Fixed props are pretty bad in reverse too.)
Besides the above, folding props VS feathering... have the advantage of being more slippery, cheaper, less complicated, and they don't snag crab pot lines when in sailing mode, like feathering ones do. The one advantage of a good feathering prop, is WAY better reverse thrust! If that is not an issue, the Flex O Fold is the way to go.
BTW... The article really debunked some myths too. size for size (= square inches of blade), a three bladed prop is NOT as good as a two. and the best would be a ONE bladed prop. The thing is that it wouldn't balance! The fewer blades the better, because one blade is a bit less in the propwash or the other, the fewer the blades.
Folks who go from a 15" two blade to a 15" three blade, and liked the results, have in fact gone WAY up in prop size, and their two blade always was too small for the boat / engine combination.
Many times there just isn't enough hull
clearance to go up in diameter, (which is better than up in pitch), so a problem CAN be solved
by switching to a three bladed prop. Given enough clearance however, (at least 2"), if you need more prop thrust, and the engine can still hit its max RPM, a larger TWO bladed prop is more efficient than the same blade surface sized THREE bladed.
Just thought I'd throw that "fun fact" in there,