I have a twin engine 28 TD Daytona. What is the main benefit of having a center tab like the big 18" x 30" that Fred sells at Trick Marine?

I've heard it makes the boat feel longer and handle better in big waves, which would sell me on one if true... LOTO can be a biotch...

Also, what's the difference in performance with one big center tab vs. two medium size outside tabs?

i think i am going with the two more conventional style tabs on my 30 spectre.. after doing some research and lots of reading and question asking i found out that tunnel tabs really are only designed for getting on plane faster and smoothing out cruising speed, bascially elimanting any porpoise... i think two tabs are better than one, can level boat if need be and they would truly make the sponson longer where as the other just makes the tunnel longer. just my .02

But if you really want to be Bling Blingin' you need all 3 I have no idea if that would actually work or if things would get worse but it's something worth looking into.

I can't speak for a hull with a pod but on my 30' outboard motion the tunnel tab helps at cruise speed and is very useful in rough water where the boat now feels like a sterndrive boat.

i have seen boats with all three... i don't know if that would be a benefit or not...

mine is already a sterndrive.... trying to make mine feel like a 36...

Believe me, that's all ready crossed my mind...

I think two would offer more stability and like you said, actually play a functional role in lengthening the boat.

What are your thoughts on fixed style tabs?

Like a tool box with only one wrench...

You need to have control over the hull. A fixed tab gives you just one setting in a sea (pun intended ) of ever-changing conditions. An adjustable system will allow YOU to take control of your hull no matter what sea conditions are like at any given time.