The HMA has gone to great lengths to try and assess riders class placement. Many suggestions have been made. Many ideas have been tested. Things to consider is not only a riders race finishes but the amount and level of riders that raced in the associated moto. This is why basing performance purely on a riders total season points doesn't work. An average rider for a given class can win a season championship by merely racing all races and an extremely fast rider won't even place in the top five for the championship because they may have only raced in 3 or 4 races. In creating a rule to govern the placement and advancement of riders a system was devised to "weight" a riders performance from the moto finish in relation to the amount of riders in that moto. ex; a rider who finishes 2nd in a moto of 5 riders is not the same as finishing 2nd in a moto of 15. The 2nd place in 15 finish needs to carry a lot more weight as they beat out 4 times the riders to achieve that position (2nd of 5 = 3 riders beat, 2nd of 15 = 13 riders beat). To solve this issue a scale was created and designed to only promote the consistent top performing riders.