LOUDON, N.H. (AP) - NASCAR has been reluctant to make more than modest tweaks to its schedule. That hasn't stopped its drivers this summer from wondering about possibilities in hopes of luring more fans: - a Cup race on Eldora dirt. - more races at short tracks. - no more multiple races at the same track. - try Iowa; go back to Rockingham. The idea of blowing up a schedule that has largely remained unchanged for most of the last decade is hardly a novel idea, and drivers have long lobbied NASCAR to try something new and mix things up over the staid summer months. Denny Hamlin, a 31-time Cup winner, mulled Nover a few potential schedule shake-ups until he splashed cold water on the campaigning.