I don't lock my bags but rather just make it hard for someone to reach in easily. A piece of wire wrapped around a couple times prevents the quick grab but still allows the TSA to look inside when they see the huge amount of metal. I get an inspection notice when I move my climbing gear almost everytime (especially with ice tools).
I have had no problems with rope, harness, and biners on the plane. I have been stopped pre-9/11 with my trad rack, so I can only imagine that this might be a problem now. I have been putting my rack in my check bag wrapped in my sleeping bag.
5.3 Upper right Ski Track
5.4 The Bong
5.5 Elementary jamming
5.6 Mental Physics pitch 1
5.7 Toe Jam
5.7+ Double Cross
5.8- Sailaway
5.8 Dogleg
Note: some of the ratings are a little sandbagged.
Have fun out there, Jtree is great!
I had similar symptoms after running one day, and the MRI showed that it was a herniated disc. I saw a good physical therapist and I am back to "normal."
I use the Manta which seems to give the best variety of holds. I couple this with a few screw in holds and jibs to play with different foot arrangements while pulling.
http://www.stoneageclimbing.com/hang.html