i used the same here....sawzall with demo blade, about 12-14". laid the blade so cuts into the corner of stringer where it meets hull and on an angle, and just put the tip in

. wasnt trying to cut any of the wood, just glass. grinder works faster, if you can get the disc down in the corner....but also puts out a bit of dust. after both sides were cut....i stuck a pry bar in and worked it up. pry bar was a flat type common in construction similar to the wonder bar GT jets had linked to. i also used a 4 foot pry bar. didnt need any of that leverage....2 footer wouldve worked for me....and a flat piece of wood to use as a fulcrum for the pry bars...so it didnt concentrate force on a small area on the hull. my stringers were smoked, so soon as glass was cut....they came up no problem. i havent done the transom yet, planning on it....and i was gonna use the grinder there where wood was tabbed in place. the multitool sounds like a good way to go too. soon as they go on sale, ill be grabbing one. with either tool, be carefull. it wont take much of a slip to start digging into the hull....
respirator should be used, glass not good for lungs. to minimized itching: tyvex suit or similar with hood. gloves that cover tyvex sleeves. i taped my glove cuff to suit. baby powder. safety glasses. basically all the stuff from the above posts.
plus shade....suit gets warm.
good luck
