Over the last few years I've started using wraps. Just stripped some arrows last weekend. I have a vane stripping tool that works really well. After peeling the wraps, I use alcohol to take any other residue off.
I generally use sharp knife and a steep angle to get the fletching off. Then I'll use a little duller knife running it back and forward to scrape off any excess glue or adhesive and wipe it with acetone on a rag after.