Bob is absolutely right about having a properly mated trap for transfer. Hit it right on all counts. I always steered away from transfer for fear of losing a chuck. Had a small one beat me out of the gate one day, but managed to chase him down after all. I did lose one this year on a transfer using a powered lock ring trap that I made and had only used a couple of times. I was so used to 12 years of the powered door traps that never open that I totally forgot about the trap at hand. When I rolled the trap over the rings dropped, of course, and he just backed out. Felt kinda foolish. Da. Senior moment, my fault. Is 70 middle age?
I do now transfer a lot using a proper trap with divider tools for making the compartments, which allows for as many compartments as I need and of whatever size I want them to be. Always have to be careful since chucks will often blast out and slam the other end, which can take a transfer cage off the tailgate if you are not holding on to it. Probably safer on the ground. As mentioned above, it is nice to return the smelly trap to the location. I used to shoot the chucks when I got home, then hose the traps down, which was lot more work and counter productive.
Always nice when a client calls in a few minutes after setting for a chuck. Have had times when the phone rings before I'm a mile away. Evening is a great time to check, when they are feeding as you will see chucks and find holes in brush or deep grass that were not initially apparent to set and catch them in minutes.