Dredger,
As Matt mentioned, there are alot of threads about the TomCat 24's on here. Byrdman owned one and I think Brent of Brent and Dixie on Discovery had one before getting their TC 255.
My take on the older TomCat was that I liked everything except the sloping windshield and the head down by the bunk. Many owners have had a roof rack with a forward "eyebrow" canvas kind of like the bill on a baseball cap, but smaller proportionately put in for that.
The head is under the helm which is good in that it gave 360 degree, uncluttered view, but bad if you want a big head compartment. The TC 24's were smaller and lighter than the TC255's and they were originally designed for small, lightweight, 2 cycle engines. One reason for the aft extended Armstrong brackets on the TC 255 was to accomodate the larger, heavier 4 cycle engines. I believe twin 90 hp engines were common and some 110's or some other larger sized unit.
Some of the TC 24s - one that I read about on here, had a crack in the transom fiberglass. That can be repaired if there was not much water influx over time. Some threads discuss making sure there is a strongly supported transom/side hull joint in the early 24's and a few early CD25s.
Properly powered and loaded, they have been reported to perform well on the site. I haven't heard of any catastrophic problems on this site or the old C-Dogs site, so you just have to look for the normal problems buying an older boat, e.g. physical damage, abuse, poor maintenance, etc.. Some have reported moving the holding tank and/or changing out the head unit for a portable or built in tank type, like the CD 25s and TC 255s.
Try some searches and see what you find. Good luck! John