I put "smart tabs" on my old I/O. Instead of an electric actuator it had a gas charged cylinder that would deploy them at low speed, then retract at high speed (due to water pressure change on the tabs themselves). Super awesome mod, boat planed so much faster, rode better in general, and I lost very little top speed. I've considered them on the AR190, but haven't really seen the need just yet.
Here's an "after installed" picture.
View attachment 144403
Worst part. Hands down. Was drilling the holes.
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@zipper said, chamfer the holes as you start them. I did this by running the bit backwards for the first small indention in the gelcoat, then flipping to forward and drilling the hole. I also used tape on the drill bit to mark the depth so that I didn't go too deep. I also covered the entire area with blue tape to keep shavings from spinning in a circle and scratching the gelcoat around the hole.