I like to fish McKinney Falls SP, wading upstream. Perfect creek for it. Never been to McKinney Rough, I don't think.
The green belt is fun during the week...weekends are brutal!
My daughter and son-in-law live in Austin and I play disc golf with them. Some great courses there that include some fun trails.
So much outdoorsie stuff in and around Austin. We based out of Wimberly a couple weeks ago and found some fun hiking. Jacob's Well is "ok". The creek downstream is very nice! Just don't get near the banks else land owners get feisty.
paul, texas KD5IVP