Hi,
here's one last thought don't get a boa and expect them all to be only skinny little 6 ft snakes many are becoming rather large boids.
Here's and example of a rather large boa , BCI..

http://www.theboaforum.com/cgi-bin/y...num=1095133141

Hey breeders are keeping the biggest females because they have the largest littler ,so after while your gloing to see a gradual increase in size.
And with time we may have more 10 ft BCI floating about..
doug