Ive had a 998 on a Balzout for over a year now and am completely satisfied. I just changed to an 1158. Havent been on the water with it yet but I expect the same satisfaction. It doesnt move. A friend had his 8″ Humminbird unit on a Ram Mount. The Toledo Bend waves caused it to bang face down on the deck and broke his screen. I know there is a tool to help tighten a big Ram Mount to the point it shouldnt move. Its a matter of personal preference.Jim EbarbMany, LA (Toledo Bend Lake)2004 Cougar/ 225 OptimaxHumminbird Helix 12 Chirp SI on BalzOut Mount at bowLowrance HDS 7 at bowHumminbird Helix 12 Mega SI on Ram Mount at ConsoleLowrance HDS 8 in dash at console