Okay, I read all 5 pages of this entire thing...

Judy is right and... yes, Mike also has a point. The first thing that came to my head when I saw the set-up was... "no wonder he's climbing"... of course, like my signature says on the bottom, I'm no expert.

But here's what I learned from the measly 2 years that I've owned these critters:
1.) The first 2 snakes I owned climbed their logs the first few weeks I've owned them. They climbed all day long. Check out my avatar. You see my baby spider on top of the log (100g bp in a 20 gallon). They didn't use the hides much. I had my first 350g pastel bp in a 55 gallon Exo-Terra decked out like this:

She climbed day in and day out. I thought it was CUTE! I wasn't a member of bp.net yet.
So then I found her mostly doing this when we pass by:

So yeah, I finally realized after a few months of owning her that she was stressed out as all get.... and I thought she was just being CUTE!

The spider was stressed too - we realized that later on - although he was eating every week without fail. We found a big difference after careful observation of these snakes in temperament between when he was in his initial set-up to when we adjusted his set-up to be more "ideal" (I guess this is what Mikemitsu refers to as the "best" way, although, I wouldn't go so far as calling it the "best" because that is really relative to the snake you have).

2.) My 3rd snake I got at 300g or so (if I remember correctly). I was already reading all these stuff on bp.net by then. I put her up in a 10gallon like this:

She never tried climbing. Her previous owner said she's a finicky eater. She ate not even a week after I got her and has not skipped meals since. That's for more than 2 years.

Anyway, after we adjusted all the set-ups to be more "ideal" - we moved the pastel to a 20 gallon, the spider to a 10-gallon. They quit climbing. They stayed in their hides most of the time only to be seen a few times at night. Which is kinda boring (they're in my office - I work from home - so I see their houses all day long).

So, my take on climbing snakes:
- I would first worry that they are climbing - checking husbandry, etc. to make sure they got the necessary characteristics - temperature, humidity, and security. Because climbing is not "ideal" for these guys.
- If everything is good, then they probably are one of the "unique" ones that just like to hang out on a branch.

Just my 2 cents on the matter.