in rough water power trim is brill and wouldnt like to be without it now although we used boats without it for donkeys years. Beach launching...well thats what we used to do before the Irish sea became a victim of over-fishing and there were "plenty more fish in the sea" Nobody that launched throughout the year in often marginal conditions would have power trim. Coming back in the surf onto the exposed west facing beaches here the few lads that had power trim found the motors just did not come up fast enough when you were about to hit the beach on a dumping wave. With manual trim the reverse lock was off on the aproach, the motor was of course still right down against the pin and gave grip and steering, ready to yank it outa the way as soon as the power was cut.
Ah happy days...probably now got a boat full of water from the next wave that hit the beach. Thigh boots full to the brim, cod and your thermos floating around inside ready to float out over the transom. Gotta heave it up the shingle as far as you can on the next wave that swills up the beach, the things we do for pleasure