"JAXAshby" wrote in message
...
....
keep in mind that props don't drag all that much anyway. according to the MIT
data, even a fixed 3 blade only pulled 170# on a boat at 5 knots, or about
the
equivelent of 2-1/2 hp.


That's not much drag??? That's roughly the drag from a 25 knot breeze! Are
you saying that this would have no affect on boat speed?

Are you claiming that a having a 2.5 hp engine pulling backwards would have
little affect on speed? At the low RPMs many boats use to go 5 knots, they only
use 10 to 12 hp to go forward