Hi Barry
Join the club.
The two leaks are probably not related , I have been chasing a leak as you describe under the propshaft and at the moment do not have a confirmed solution, what shaft seal do you have ?
As for the engine compartment , is the water, coolant or salt water ?
If salt water check seawater pump connections if coolant check the connections to to calorifier.
Which engine do you have ? You may need to get a good light on the engine whilst it is running and look for drips, careful with your fingers.
Yanmar rubber seems to creep so the hose clips need tightening every year a bit .
Jan
325/32
Blue Moon