I've sight-fished with craws a couple of times and came across a couple of problems.
It was difficult for me to keep the 'dad in the nest. As soon as he saw Big Mo', he was motoring his butt out of there.The other problem is associated with the first. Your 'dad doesn't have to get very far off of the spot the bass is protecting before Mr./Mrs. Bass will only posture instead of strike. That leads to my final problem...I never got a bass to hammer my 'dad. They would chase it, they would strike AT it...they would even grab it by the ass, but they wouldn't strike it in a fashion to allow for a quality hook set.
My solution was to throw a very realistic artificial crawdad and just keep shaking it until I really pissed them off. The artificials worked much better me.

Happiness is a tight line and a stiff pole.