I don't even necessary agree that the equal pay draws more of a crowd. Not only do they have a great turn out at all the big NBHA shows, but this weekend, locally, there was one of each race available. Saturday was 4D, 1/2 splits, equal payout. 125 entered. Sunday was NBHA with 123 entered. Same arena, same entry fees and almost the same amount to the j/p each run (Saturday put $1 more/run to jackpot).
Had to edit this. The results from Saturday's race are up and I was misinformed on the payout and the # of entries. There were only 119 entered and they also only put $24 to the pot. So actually, the turn out was better for the sliding payout race.