I know it sound creul but we used our retractable dog leash. It worked and we saw many parents with kids in harnesses and leashes. Hunter is a runner also.
The only problem we had was at Orlando airport when we left, they took Hunter thru the security metal detection first then held up their hand to stop us, of course Hunter ran, my husband ran thru the detector and it went off, chaos occured, they almost tasered my husband who was just running after Hunter who was just let go by security. What a cluster!!!!
That is the worst thing that happen to us during our trip.
April