The L-Sit on Rings

Hey man Great video. Just curious is there any way to do this exercise on rings assisted. For example with resistance bands or something like that. Iv'e been looking a way to do this for a while. I tried doing the l sit on some cheap dip bars from amazon and I can just about do it. Rings seem a bit to wobbly for me. Whats the next progression for me after  Dip bar L sits