Agree with several of these posts
TAKE IN or similar is hard to confuse with either SAFE or SLACK
Might be hard to get out of the habit of yelling TAKE if you are already doing it, but it's probably worth it.
Use your partners name and acknowledge there calls with OK.
Radios are a great idea but just like a GPS, you should know what to do if something happens to it. Panick maybe? |