The proof was in the eating it seems, Chip's bipe weighed 5 kgs to cope with wind, and I've heard the others struggled in the strong winds on the final day of the WC last year. double wing drag is a bonus coming down but not flying straight! Flier/builder team Onda and Naruke had the right idea, bring a monplane backup model (he flew it in the finals) and they had the smallest/thinnest wings of all on their Bipe. Probably why CPLR never brought his suxess along to the WC.