As a rule, I use a starting clamp for crosses on gut/poly hybrids and then go back and tie off the poly on a cross. With the Pure Aero this is not possible. The loop slots leave you no choice but to tie off on a main. I am wondering how others here handle this knot and I would especially be interested in hearing from anyone using a free floating knot (not actually tied to the anchor string, just floating freely in the tie off hole). I am thinking this is the best option but have zero experience doing it and have always considered it to be kind of taboo.