I have a seized and broken bolt where the trim tab anode use to be on a yamaha 25. Getting a drill in there to drill it out is a pain without removing the prop shaft. I tried to drill it out as best as I could but the stainless bolt just forces the bit into the softer aluminum. Are there any known tricks to get it out without taking everything apart to get it in a drill press? I've tried drifting it out and using extractors with no success. I would rather not drill the whole thing then have to fill in material but I'm not seeing another option. I think I know the answer to my questions but I figured I would ask in case there is something I am overlooking.