you've been looking into getting a boa for the past 20 minutes and already want a hypo arabesque? DAMN. and by 72x18 do you mean your 125 gallon tank that you seem to be pushing on everyone? and yes, a boa would act like a boa. don't be so hasty to get something, do the proper research and chill out, you already made a bad name for yourself on here in several peoples opinions and I just hope all that haste and impatience doesn't lead to poor husbandry since you don't want to take anyones advice.