Tom Best wrote:

It's a Sea Pearl 21.

Aha! My wife used to have one of these. Cool boat, we should have kept it.

Only about 850 lbs loaded. As this is fairly
light, I think I'll try 11 degrees. The length of the lever are is
somewhat up in the air at the moment as I have two options on the
pivot. One is on the transom and the other is above the rudder in
place of motor mount.

I'd go on the transom. There will be a lot of side thrust (in fact, it will
push harder sideways than forward) which will put more strain on the rudder
than the motor would.



Since you know of such things, should the side of the yuloh that faces
down be cut with an aerodynamic (sail) shape and the top side flat?

Since the leading edge alternates, you have to make it symmetrical or have a
yuloh that works better on one stroke than the other. But giving it a sort of
streamlided 'D' shape should help.

I rowed my wifes Sea Pearl many miles, why aren't you just plain rowing the
thing with good old fashioned oars?

Fresh Breezes- Doug King