My GF has that board. She had me put some hibiscus decals on from RonJons and it was a bitch. I thought the stickers were crap but maybe it's the board now that you mention your problem. I just ended up going over them with a squeegee type effort and making sure that all the air was out and that all the decal was properly pressed. She's been out on it a few times now and the decals are still there.
Heather Johnson got her decals to stick too.