I put Lenco 12x12 edge mount racing tabs on my 2100sc and they were not enough of a solution for me to recommend them. I think the shallow deadrise of the hull along with the strong reverse chines make it too hard to overcome the eventual rough ride in anything but calmer water.
Because of the transom design, the tabs can't be placed far enough outward to help with listing in the event of uneven loads. They do help get up on plane a little better but I'd just recommend going to a 20" pitch 4 blade prop to help with that.
If you do decide to go with tabs, try a fin on the drive first and see if that helps before spending the money. I have a suspicion that would have saved me alot of effort and $$ on this project.
Here's some pics from when I was test fitting. The white square is a 12x12 piece of cardboard. No pics post-install but you get the idea. The tie down straps are not obstructed in any way. The top mount of the actuators ended up just inside of the hull tiedown rings, since any further out is inaccessible. You can see the backing plates of the tiedown rings from the engine compartment (not pictured here).
To make this exceptionally clear, I had friends on the boat before and after the install and they noticed absolutely no difference in the ride quality when the tabs were being used. Nice thing was they did not affect top speed at all. I would not recommend tabs for this boat.