98% of the time I just pull out the phone and make sure they can hear me....
"Hey Greg, is bass in season, I just saw a guy keep two, I thought it was closed?"
"It IS closed, thanks for confirming that, I'll call the MNR"
Most the time I use this phone deal on the piers as guys fish with 2 lines all the time. I've learnt over time it is pointless as most of them do not speak enough english to understand. So i call the tips line.