I highly recommend a folding prop. My MaxProp makes a huge difference in backing. BUT the design of the zinc is a problem because it's mounted on the butt of the prop and it dissolves at the screw points, dropping a large chunk of unused zinc into the H2O. I've painted the screws and also used the new plastic sleeves MaxProp finally began to furnish, but this is still a problem. For me anyway.
"Andante" PSC 34 #276