There is also the two foot load in for full up to lib. The bases do not move their physical bodies, except for grips and the flyer is rotation by herself. Here is a video of my stunt groups doing it. Secondary bases grips starts off with the flyer just stepping into their hand after they step into the main bases and they toss it up and wait for her to rotate half way around and then grab their grips and finish the rotation. The main base grips are as follows, left hand is how it usually is when the flyer loads in, the but the right hand is twisted so the palm is facing up but the fingers are turned counter clockwise facing the base's stomach. The bases then bounce the flyer and the flyer rides it around and holds her weight while the main base releases the left hand and twist the right hand undone clockwise to the point where the fingertips are facing the base's left hand wrist. Therefore the right hand holds onto the flyer's toes/front part of foot while the left hand releases and catches her heel once fully rotated. The backspot's grips/job is fairly easy as they have the flyer load in and then grab ankles, bounce and let go. They then watch for the full rotation and grab ankles and support. Flyers load in main then second and your option is to hold your weight by shoulders or you may use your arms (above you) to hold your weight.
(SIDENOTE- if the base is having a hard time with the right hand stabilizing after the rotation, the secondary base can catch hold on the main base's right hand that is holding up the flyer's toes. Also, backspots, if there is a problem with fully rotating you can watch for 3/4 rotation and grab ankle, push up and around to complete the rotation. Also make sure to throw up not out!)
Here are two videos.