Why don't you just buy a stabilised lens? Canon, Nikon and Sigma sell a whole bunch of them that will work on 35mm film bodies; it's Sony that does stabilisation in the body instead (therefore no stabilisation available on Minolta SLRs).
You want an external stabiliser? It's called a tripod.
The Sigma OS lenses are stabilised with the SSM-enabled Minolta AF bodies such as the dynax 7.
There is nothing, absolutely nothing, half so much worth doing, as simply messing about in boats