Hi there! My silk is just 16 feet high (probably exactly 15 feet of usable height?) If I start high (one big climb + one invert), it ends up too tight for me to do the part where I pull-up into the upright cross-back part. But as it is, I always end up with my head touching the mat (I drop slow). Is there a way I can do the high rig challenge, or do I just stick to the low-rig one for safety?