I have been called a few times this season to unfoul line from propellers and shafts on lobster boats. I have a great titanium dive knife with both regular and serrated blades. It works for most applications, however, a few of the jobs involved some difficult-to-get-to angles to use the knife. Was thinking that a small toothbrush-size rotary cutting tool would be ideal in some of these situations. Like an underwater Dremel tool. Would not need to be industrial-size, not cutting wire or cables or anything like that, just rope. Anybody heard of some sort of small, cordless underwater rotary cutting tool for something like this?