I switched from hand signals to radios on a blind pick and it was night and day
Two summers ago on a hospital job in Amarillo I had a blind pick over the side of the building with no line of sight to the crew, and my hand signal guy kept getting blocked by the structure. So I made the call to go with 2 way radios and a dedicated spotter instead, even though half the crew hated changing what worked for them forever. We set up a channel, talked every move out loud, and the picks landed smooth with zero guessing, probably saved a full shift on that pour. Any of you run radios full time, or do you still trust a good signalman over the air?
Man, the part nobody talks about is the sound of it. Radios keep your head up and your eyes on the load instead of craning around hunting for a signalman who vanished behind a beam. We run both, but I'll take a calm voice in my ear over squinting into the sun any day.