I just had to replace the trim tabs on Nomad after completely losing one when it broke off at the hinge. To help keep this from happening again, I decided to install safety/limiting cables on our tabs. The addition of cables will stop the rams from going all the way down and breaking off if you forget to raise the tabs up while fishing or backing down. This will also help if the bottom pin on the ram breaks. The cables will stop the tab from flopping forward while backing down. I've used this system on other boats in the past with good success.
To install cables on a new boat for the first time, you will need to add a strong attachment point to the hull at the top and a place to attach the cables to the tabs. On Nomad, we used 1/4-inch diameter stainless-steel eye bolts for the hull attachments, through-bolted through the hull and sealed with 3M 4200. On the tabs themselves, I drilled 1/4-inch holes and inserted stainless thimbles. To mount, run the trim tab ram all the way down until it is fully extended, then raise it up about 1/4 to 3/8 of an inch.