There are a couple of different versions of the Catalina 30
& I'm not sure what the "tall rig" variant is, but I'll start you off with a few general comments.
A good place to start looking for spec's on any sail boat that you are considering buying
is sailboatdata.com. It's not a perfect reference, but it's a good place to start for general information. The straight C-30 variant can be found here - CATALINA 30 sailboat specifications and details on sailboatdata.com
What you are looking at there is a solid keel
boat that draws a little over 5 feet of water
& weighs a little over 10,000 pounds. I don't know Bayliners very well, but judging by the NADA stats, I'm going to guess that your current
boat weighs no more than 3/4 of what a C-30 weighs. You are not going to want to take that thing into shallow water due to the keel
& you are not going to want to trailer it with your typical 3/4 ton pick up truck due to the weight. If it's in good condition, it should be a fairly seaworthy
vessel & should easily take a 6-foot chop if the captain
does his part correctly.
This was a popular boat, with over 6,000 built. There were later mark 2 & mark 3 variants also built. The mark 2 was said to be first built in 1986, so a 1982 would likely be an original version.
A diesel motor
is generally a good thing to have on a boat that size, but condition means a lot. You need an opinion from a qualified mechanic
to judge the motor
The condition of the standing rigging
means a lot, as does the quantity, quality & condition of the sails
A sail boat is going to be much slower than your current power boat
. If your fishing
grounds are 15 miles out, it's going to take you a few hours to get there & a few hours to get back.
If you want something that you can trailer, then you probably want to look at a 20-24' sailboat. If I knew the towing capacity of your truck, then I could give you a more accurate size range to consider.
If you want something that can go into water a foot deep or be beachable, then look at something with a swing keel or a retractable centerboard
If I were you, I would probably start by buying
a smaller sailboat that you can learn on & see if you like it. After that, if you like it, then you can trade
your "stink pot" for a bigger "box full of rags".