Thanks for Your comments/input. Sounds like doing it a couple of times /year would not be too bad, but summertime on a weekly basis, guess too much of hassle as probably also prop would need to be changed. Only minor savings on service and insurance.
Downhilldai put it well.... having 4 now, will sell the bombard and towatsu 25/30 so then can buy a another one keeping total number the same, most likely the wife won't notice a difference anyway
Have anyone tested to "tube" the transom holes? I mean to drill the bolt hole slightly oversize and then fit a stainless tube(of a size that the bolts would fit through) with sika. That way, in theory, water would stay away without sealing the bolts separately. Maybe another bad idea....?