Re: How does one handle boas when they get big?
Look up Tom Pecanic...I believe he's right in Scottsdale and breeds boas. I've never dealt with him, but everything I've heard makes it sound like he is top notch. He also breeds rosy boas which are a fun little alternative.
There are many other snakes that fit the bill as to what you're looking for. I had an australian brown water python for a while, and that thing was possibly the most pleasantly fascinating snake I've ever owned. Very interactive and personable as far as snakes go, very easily handled, and they stay a very manageable size...I think males top out around 5 feet and are relatively slim bodied.