I took all of the old wood out under the bunks in the bilge but cutting the entire bunk out. However, when it came to getting the stringer and mount under the engine out, I'm having some issues. The bottom was soft on the stringer so I was able to get it out fairly easily. However, the mount and top portion of the stringer is tough as nails. I've tried a sawzall, trilling holes in it with various drill bits, and an oscillating tool. All of it is really slow going. Is there anything else I can use to get that wood out of there that isnt going to take 10 hours?