ORIGINAL: bassfisher
After doing all the checks and have the plane lined up to take off, I like to have another pilot stand next to me to adjust the trims when I get the plane airborne. I can concentrate on keeping the plane flying as I tell my extra hand on what way to set the trims to get pretty straight and level.
This is one of the most helpful things when maidening a new plane.
If you discover that the plane needs a lot of trimming and it's a handful to keep level, having that extra person nearby can mean the difference between a safe landing versus going out to pick up a pile of debris.
That other person is also useful should you need to alert everyone else as to the difficulty you are having, in a busy airfield.