Hey Elky,
You talking about that Flatland you hunt, or the vertical stuff I always seem to get stuck hunting???
Chambero,
I think you would be fine with a 17 year old, and it kind of depends on the horse. I have been test riding horses the last couple of weeks, and am looking to buy one, that I can hunt with in 7 years, when my buddy finally lets us use horses, insstead of our pack frames and Schnee's.
I have ridden ones as young as 6, and am planning on a 10-11 year old, so it would be about 17+ by the time we would hunt it. I would then think as a primary saddle horse, you could ride it till 22-25, as Elky said, and then keep it in the pack string, until it ends up getting hurt.
And huge parts depend on the specific horse, and the actuall country you will be hunting.
What are the prices down there for stock horses, for riding and hunting? Up here, it looks like the range is $1000 to 1600 for a stock gelding, with not "pretty" paint on it. If you get one for roping or barrels, then you get in the $2-3,500 range, pretty quickly. Cutting is a complete different price range.
I found one 11 year old that used to be in a bucking string, that is pretty scarred up, but seems to be sound, and is a damn athletic horse. (Will about spin me off.) And he could likely be had for $1100.