here's a stab, others should comment
Dennis, I'm assuming your in a slip with running water and hoses available. On initial thought I would just take the thing off and bring it to a location that is easier to work with, but with the info you provided here's a crack at it. If you backed the stern into the slip you might obtain better access. From here you could take the prop off the lower unit, attach the suction cups of the engine flushing clamp over the water intakes and maybe you're good to go? I do have to admit that I've never tried this but this thought did occur to me once when I was lugging the motor off the dock to bring home for a tune up. I'm on a mooring so this is a process I go through several times a season. I also have an adjustable motor mount, as of this past season, with plenty of vertical lift so I might go ahead and put this idea to the test for myself if the overall consensus doesn't see any major pitfalls.Brian ConneelyH23 Kickin' Back