" Calling " Fair Ball

[officialtony]

OK, I'll start by saying I know the proper mechanics is to only SIGNAL fair ball and not verbalize it.
Having said that . . .
Freshman game. R1 and R2. 0 outs. Batter lays down a bunt that stops just off the plate in fair territory ( directly in front of the plate ). F1 and F2 converge and pick up the ball. I step to the 1st base side out of the way and signal fair ball. Nobody - and I mean nobody - moves. Runners are several feet away from their bases. Batter/runner is standing in the box still - bat in hand. It seems like eternity and no one is moving. Probably only 3 seconds -maybe 4. I have not moved ( other than I feel like I am doing the Tomahawk Chop ). Finally I state " Fair ball " fairly loud. Lots of screaming and scrambling and ladies running everywhere. F2 throws to 1st to retire batter/runner and after dust settles, we resume play with absolutely no complaints about the play.
My question - should I have made the statement or just stood there and wait out the outcome?
Again, I know it is improper mechanics. I just didn't know what else to do.
Thanks in advance for your comments.