I use the towels and turps. Lots of turps, plastic wrap it and leave it for 12 hours at least - the turps has to soak through the pad to the glue below. Pad will peel off without scrapers or heat then clean up residual glue with more turps. And a scraper, but no effort should be required
Doing it with heat and scrapers just leads to burnt fingers.
I've done quite a few to get to this conclusion.
New pads Australian Jet Ski Parts or something, or if in Melbourne SUP warehouse
www.supwarehouse.com.au/product/white-eva-non-slip-traction/New pads will have self adhesive 3M backing but beware - sticking it down is an all or nothing exercise.
Let me try and find something