HEAT! So I had this antenna mount that I foolishly sealed with 5200 several years ago. Have since learned my lesson. :x I needed to get it off to open the hole up for a larger diameter antenna cable. I was dreading it. I had de-bond but no way that stuff was going to seep under the mount with it being flush. I tried 80lb braid on 2 small dowels to try and saw under it. Three sweeps and that broke. Grabbed my Harbor Freight heat gun and aimed it at the mount base. I was surprised how quickly she gave way. I was able to slide a 3" putty knife under it in less than 20 seconds. Came off easily. Then I used the de-bond to clean up the residue. Simple, painless, clean and quick. Sweet! Not many boat projects go like that! (Then I took the tube of 5200 and threw it in the trash :mrgreen: ).