Or a chainsaw. Helped a friend rip down a huge stump to fit in his 55 last week. Deciding to cut it: two months. Cutting it: two minutes. Figuring out which piece to use? Oy vey, he'll be fiddling with both of them for another week at least.
I'm also having issues with scaping my 55, luckily for me though I found a free 75g on CL yesterday, and then the center brace on my 55 mysteriously broke within a couple hours (It broke by itself, not by my hands lol). So I was able to justify the need for larger tank to my wife. YAY! I'll just swap out the 75, let the 55 sit in the basement for a couple months, then get new top trim for the 55 and set it up too at a later date after I sweeten her up
Oh and a little trick I've found to help sink driftwood is to drill holes in the 'bottom' to the core. Helps the water permeate the wood faster.