So I snagged an Avon Redcrest and a 1976 Johnson Seahorse 2hp from craigslist for $400. I'm pretty happy with the two of them although the redcrest is still a bit too large to comfortably stow on my 26'.
However I took them out on a nearby lake and for the high drag soft bottom inflatable it felt like the engine was overpropped and unable to get to max rpm. Going from 70% to 100% throttle gained little.
While looking for some other parts I noticed that the new props are plastic with an interesting design - sort of long curved blades. It struck me that in practice the plastic prop might flex under load and effectively reduce it's own pitch.
Is the plastic prop actually designed to flex like this or am I overthinking it? Would it be a worthwhile upgrade?