I have an '02 Tracker Pro 185 with a 75 hp Mercury outboard. I mostly use it for white bass, stripers, wipers, walleye, crappie and perch. I don't think I've ever been on a fiberglass boat, so I can't be much help there. I used to have a 16' aluminum with a 25 hp boat. It was narrow, so I was always at the mercy of waves, wakes, winds and wiggling. I do not notice that much with my '02. It seats two very comfortably and will seat three without much effort on anyone's part. She floats in 6-8 inches of water with the big motor running, so I can't complain about that, especially when you a year with a lot of spring rain or one like 2005 where Monroe is 5 feet down. The gas mileage is terrible, I think, until I talk to other guys with larger motors. I go out every week, weather permitting, and I probably fill up about every 4th or 5th outing. Top speed is 40 to 42 mph, depending on the weight and wind. With the modified V hull used by Tracker since about '01, it takes rough water without any trouble. You never get the bone-jarring ride that you get in a true jon. The boats are a little weak on reliability coming out of the factory, but the cures are not expensive. The braces on the underside of the hatches, for instance, don't hold. The spot welds give from standing on them, but you can screw in some thick angle aluminum and cure that at minimal expense. I also had trouble with the live well. Once I replaced the original motor and re-routed some of the tubing, the trouble was gone. The trailer bunks were a problem. Twice I had them re-welded before I noticed that a lot of trailers don't even have bunks. So a couple of years ago I took them off entirely and haven't had any trouble since. The boat loads and unloads easily. It trailers nicely and I often forget it is behind me. It ride straight on the water, holds the throttle well, and after about a year of small and annoying repairs, it straighten up and doesn't give you any more trouble. You will not like the carpeting. It attracts dirt and stains, and if you are fussy, you will spend a good deal of time cleaning the carpet before you realize that there is no way to get ahead of the game. Just take it to the carwash and power it out about once a month; for a month it will look good.
That's my take on it. Good luck to you. If I were doing it over I would buy the boat again.