If your graphs are smaller than an HDS 8 then you will be fine. I had 2 HDS 8's on my skeeter and the RAM mounts don't hold them in place in waves. I am putting an HDS 8 and an HDS 12 touch Gen 3 on the dash, and an HDS 9 touch Gen 3 on the bow. None of them will have a RAM mount under them. I see TH Marine makes a decent looking mount.