Bros always struggle with their hands while posing for a picture. Some do the "bro point" at the other guy with which they're taking a picture. Some do a simple thumbs up or other hand gesture.
Others... the more socially awkward among us (like myself) simply just stand with their arms at their side like a doofus. This is the option Nick Saban went with while meeting Alabama's gymnastics team, complete with locking his hands to keep them from wandering to a place they shouldn't.
Well played, Nick. Well played.