I've heard Airport Rentals rents trucks that can be run on the Dalton. I've also heard good things about Papa Bear, but I wouldn't be too inclined to hunt the Mulchatna considering all the bad reports floating around. Ram Aviation out of Kotzebue has gotten some really good reviews. I'd definitely look into them if I was after the WAH. Last I heard the airboat transporter (Alaska Goldrush) on the Sag wasn't doing drop-offs anymore. He still does guided hunts for about $4K a pop, but that's it. ABM knows the finer details of that though.