Larry, what can I say?? I am very pleased to be able to help you after all the help you have given me!!
I have a 19.5' fiberglass dual console that I fish out of. The boat has a 4 cyl. 130hp engine and calls for a (6 cyl.) 150. Empty she SCREAMS. She will hit 40mph, hop on plane and do the job well.
The issue came later. I bought a 40 gallon Super Bait Tank (custom made). It actually holds 45 gallons of water (360lbs.) and the tank is 30-40lbs. on its own. Now add me and 2 other fishing buddies. The only place that I had to put the tank was behind the console. So guess what, the *** DRAGGED badly. Would barely get on plane, and when it did, I had to give it lots of throttle and had my nose pointed to the sky.
Put a set of smart tabs SX on there, and it’s like a whole other boat!! Planes right out with all that weight, and will stay on plane at 4200rpms (22mph). Empty she will stay on plane at 3500rpms(16-17mph)!!
The tabs are manually adjustable, meaning you have to do it out of the water. I just set them for the load that I have. If I go catfishing with one person and no bait tank, I will set the tabs on 1. If I have a heavy load, I will set em on 5. You don’t NEED to change them once you put em on, but it helps get a little more performance out of it.
The downsides: if you are in rough water (which you won’t be) and you need the nose up high, you cant do it with the tabs installed. Regardless of what the nauticus website says, unless you are porpoising at WOT, you will CERTAINLY see a decrease in top speed, due to the increased drag.(I lost about 1mph, from 39mph to 38mph)
Something that they offer now that will combat issue one, is they have a little switch that will disengage the tabs and pull them upward, and you can easily do that while on the boat. (if you were drifting shallows you could flip em up.) If you drift backwards in current and catch a tab you will NOT be happy.
SO, all in all, for my application I am VERY happy. I have also considered adding them to my jet boat. If I do, I will likely install the stainless steel set rather than the plastic. It will match the boat better, and probably hold up better also.
You can see the tabs from the side here: