We installed Flex-O-Fold props on our Tobago
, after being told that Yanmar
had input in the design. These props, twin blades, have resilient material where the blades open against the hub, such that they do not cause trouble to themselves or the engines when the props fly open.
We're quite happy with these props, during all activities. I'm sure this response is too late for you, and hope you found a product as good or better. Hopefully, it provides an option for other Forum visitors.