Select to expand quoteminuet said..
How to remove 3m stuck deckgrip from board
It's a pain in the ass, but citrus acid. And a BBQ scraper + good luck
The only way I've done this successfully before is with a Stanley blade scraper with plenty of time and grunt! However, depending largely on how old or long the deck grip has been stuck down? Next time I'm going to try leaving it in the sun for an hour or so then apply a high pressure water jet to anywhere it's vulnerable or lifting at the edge?
More good luck too 
super hyper duper easy
[1] remove the pad by rolling it underthumb
[2] put a cloth on the glue left
[3] imbibate with a solvent (I use "Solvent F"). never use acetone, it creates micro cracks in the resin, and cover with a plastic sheet
[4] let the solvent marinate 15mn
[5] remove cloth, and scrape the glue with an (old) credit card, the glue cames off as easy as a butter layer
Images in: http://www.gongsup.com/forum/viewtbroke://www.gongsup.com/forum/viewtopic.php?p=46244#p46244opic.php?p=46244#p46244
G'day Colas,
Thanks for the tip.
I only want to remove some of the grip (looks like you did too!). How did you stop the turps form soaking into the grip that you want to remain on the board?
I did this 2 month ago to remove a 25cm square patch around a handle to repair it, and also on the tail section of a 2nd hand board to add a tail pad. I did nothing special, just put the solvent layer ins the cut out, covered and removed. The remaining pad didnt seem to get off, I took care not to push/pull on on while wet, I guess once the solvent dries out it is as well stuck as before.
Note that some factory-set pads may be harder to remove, if they are glued with epoxy resin. But I don't think this method is used anymore.
