With the extended planing surface it should not need tabs. As for planing, Bryant hulls have a long running surface. I had to get used to that, it does not pop up on plane like some boats do, Not like climbing over a hump, more like walking up a ramp by way of comparison. There is more boat in the water while planing than you may be used to. The shorter the boat the more this is magnified regarding handling.
Your 1998 model looks different than mine, yours has sharper chines and corners at the stern, Mine is round the the stern edges, the chines do not seem as sharp, so the rest of this may not be apples to apples.
I know mine cannot take a lot of trim before the prop will blow out. By the gauge, right at 1/2 is when it will start to blow out. It is also sensitive to trim in turns. If I am at the trimmed out sweet spot and close to top speed and turn the wheel it feels like it will fishtail, have to bring the trim back in closer to 1/4 to turn at speed. I don't really notice the boat being more out of the water after 40 or so, but it must be, can hit a pretty good clip.
On yours, since someone had put a fin on it previously, there may be a problem with the trim, or just interpretation of what it is doing while getting on plane. I trim in all the way then bump out out a couple of clicks then push the throttle to about half maybe more if I have passengers, the boat starts pushing water out of the way then after a couple or 3 seconds the water settles down and it is on plane, speedo indicates about 18-20 usually if I keep the throttle there. Usually don't. If I am trimmed up accidentally of 1/4 or more the prop can blow out just taking off. All of this is with a 21p 2 blade aluminum. I have a 19p aluminum and it accelerates quicker but can overrev.
What prop do you have on it? Pitch, brand model. It may have some issues, and you find you may need to change it out to a known entity while sorting all this out.
Do you have any extra mounted equipment, subs, amps, etc?
mine (2002 188 RB) (prop has been changed since this photo)
