iSS is for all those real divers that consider other dive tricking organizations to be completely dead easy in the true sense of these words. In contrast, iSS takes drilling seriously and thus really rumbles you lazy piece of neoprene (or trilaminate).
Of course, with our drill concept, cash in advance is just business as usual. We know why, trust us. Because we're no charity organization. At least not for people other than our upper management.