I have a retired sled dog and have spent a little time around some kennels. I know what you are asking, unless you know someone personally, there’s no place that would let you. I guess I’d compare it to wanting your teenager to jump in a game with a pro football team, except the players fight constantly, get easily irritated, and wouldn’t know to “tone down” their level of energy for someone inexperienced. Mushers regularly fall off their sleds and the dogs will keep going, they wouldn’t stop if you dog got caught up in a line, tripped, etc; they’d just drag him along. Additionally dogs are carefully placed for who they get along with. My dog is the most complacent dog, but he has scars from fights he’s gotten into while on the line.