Bill,
The TH224 is a nice package and the 2008's are finished very well. I have a 2006 model. Hole shot for a deck boat is outstanding. I have friends with ski boats, fiberglass deck boats, cruisers, and they are blown away with how fast my boat gets up and on plane. I have a top speed of about 42 mph (gps measured)with the bimini in the boot, but still on, and the cheap standard aluminum prop. I think I could get it into the high 40's with a SST prop and taking the bimini off. For the bass boat set, 42 may not seem fast, but this is a wide open boat with a small windshield for the driver. You may be having fun at top speed but no one else in the boat is.
I don't see any problem with pulling a skier and having a bunch of folks on board. I don't have any skiing kids, but we pull a triple dog towable with 6+ folks in the boat all the time. No problem, that motor is a horse.
The boat handles chop real well. On plane, it gets high and cruises over everything. Very easy boat to drive once you learn the docking.
If I could do it all over again I would get the 175hp, although the dealers say it's not worth the difference in money. I would also look into the Verado. I heard gas mileage is nothing like the Optimax and the performance of the Optimax is the best, but the Verado is supposed to be smooth and incredibly quiet. If you are mostly taking slow cruises (like me) when you aren't fishing, quiet is good.
Good luck finding one used. When I was looking for mine I looked around and found nothing anywhere. Nobody sells these boats once they have them. In fact a couple of the dealers that I talked to claimed it was their favorite all-around boat. Suggest you contact lots of dealers for quotes. Pricing varied a lot when I bought mine.
Maybe I should sell you mine and upgrade to the 2008 with the Verado... hmmm ... a new toy.
Mart