From desert scablands, potato fields, bayous and seaside amusement parks, young men prepare to assemble in a modest Idaho city for Canyon State’s training camp. As diverse as their backgrounds are, all share a dream of improving on last year’s 3-7 record and achieving respectability in the low-profile world of Western college football. No one hopes for it more fervently than the coach known as “The Leather Man,” whose NFL future was wrecked by a knee injury and who now faces future heartache raising a handicapped child as the love in his marriage dwindles.