theres a big differants between 65 and 80 percent letoff pooe. i see no differants i started with a stick bow went to a 50 persent letoff thats a differants. as far as 65 to 80 big deal. the people trying to keep it at 65 for what reason i don' t no is probaly because they took theres with a stick bow. a bows a bow as far as promoting archery i think its the hunters themselves and most don' t belong to no gloat club.