I had a 1969 tempest that in an attempt to inject a bit of water I glued a basket ball inflation needle through the thick gasket under the carb and fed it from a pop bottle but it didn't seem to give me the experience I was looking for..LOL
Just don't get ballsy with it and take it on the freeway. You may feel in control but any sudden change to avoid an obstacle and then the boat takes over...
They do but the cash outlay can sometimes be spread so It doesn't hurt so bad. I've never bought a new boat, can't afford it, but I can prioritize the shortcomings of the old boat and hopefully keep it going awhile.