Hi Josh,
The ram is mounted with 1/4″ stainless machine screws.
I used fender washers and self locking nuts on the back side.
I have had issues with ram mounts moving in the past as well but it was usually due to undersize balls for the weight. The mount I used is RAM-D-202-25-C-202U which is listed for the Helix 9,10 and 12. I haven’t tested the mount in rough water yet but it feels very solid and I really don’t anticipate any issues with it moving around. I have pulled and jerked as hard as dare on the helix and it does not loose its adjustment, but…I’m sure it will bounce a bit in rough water, not a lot, but a bit.

I have a Helix 10 console mounted in my solera. It’s on a 2.25″ ball ram mount and is very solid. The ram mount moves it away from the windshield and you still have enough room to raise, lower and tilt. Positioned to where I like it I have close to 2″ of clearance from the windshield on each upper corner. The 7″ that came in the dash is now in the bow, and the blank out cover in the bow is now covering the hole in the dash where the 7″ was.

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