I know you didn’t want to replace the tub because of the expense. Have you checked www.craigslist.com or www.freecycle.com for used tubs. Even a repair will still not last as long as a tub that doesn’t have this problem to start with. The repair may be more practical in your...
I love the Dewalt 12" slider but it is really heavy. I have also used the 12" without the slide, it will cut just about everything but weighs a bit less. I would say that your mobility needs should play heavily into your decision.
Kris
RestorationJournal
Pond liner is very similar if not the same as rubber roofing. If you have access to or come across some it would work fine. It won't last and I don't recommend it but if you want to do it on the cheap and don't care simple black plastic would work for a year or two until it starts to break down...
I have all Dewalt cordless tools but have heard great things about Panasonic, their drills in particular. Apparently the trigger response is just wonderful. I cant say any of this from experience but my repair man can't say enough about them.
Kris
RestorationJournal.com