Over the last 3- 4 years or so since installing my Flex o fold 2 bladed prop...I have enjoyed increased speed under sail(call
it 10% or 1/2 knot
or so...). both forward and reverse under
power much better, I did increase prop size 1". Another
benefit is that it seems I am sailing under very light air,
where prior to install I might be under power in similiar conditions.