I agree
I always crate my animals over 3 foot. Safer for them and you. I have a few different types of crates, depending on the size.

I rarely have no one to help me and have to do it alone. Believe me when you try to put a 5 foot caiman in a crate alone it is a task. The lowering of the heat i can't say I would do. These animals will surprise you. You think because of the lower temps it will be easier to handle. Then you let your guard down and smack you get tagged. Plus how will it affect the animal?
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2 A. Miss at 8'
5 A. Miss at 3'-5'
1 C. Nil at 9'
1 C. Croc at 6.5'
6 A. Miss/C. Croc 2'-3'
1 Naja kaouthia
1 A. c. contortrix
1 Ophiophagus hannah (but not much longer - gettin old and that snake is fast)