Can someone tell if this is male or female?

[Tim Mead]

Yeah not a boa, but sometimes you can get an idea of male or female based on the girth of the tail past the cloaca, Im going to guess that Is a female based on how narrow the tail is past the cloaca (no room for hiding hemipens in there) but just a guess

Right on, When you pop a good number in a day you "can" get a "feel" for what it "might" be by the bulk in the tail..If your talking colubrids a person can tell by looking at the animals tail but when you step into the boids its highly unlikely..
ALTHOUGH there maybe "A" person or 2 in the world that has the "GIFT"