My spotter is always at least 60ft away. We tried walkies, but the "transmission delay, between pressing button and the ready beep, " is too long and not helpful. DW uses hand signals (BIG ONES) and points the direction where she wants the back of the trailer to go. We always walk the site before inserting the TT so we both know where we want it. If she steps out of the mirrors for more than a second or so, I stop until she is back in site. No yelling/screaming involved. Once in position we check the installed levels and set the "legos" beside the tires. I pull ahead just enough to slide in the Legos and then back onto them. Back Lego stack has chock attached so I can't back off the stack. Then it's just detach and stabilize. Usually under 5 min to get to the first adult bevy.
Happy Camping