Your 50hp is the max for a Kiwi prop. They are a good feathering 3-blade – much better than 2 in reverse, believe me – and have composite blades that will shatter if you hit something, rather than damage prop/shaft/engine. They even come with a spare.
I would have gotten one myself, but my 70hp dictated a different brand, an Italian-made J-Prop; it is adjustable in the water, while others are not, and one can be done on the fly (can’t remember which).
