I'm attaching a wind-load relief strap for a hitch-mounted trike carrier, and was wondering where the best hard point is for attaching the strap. The hitch has a 200-lb tongue-weight limit (per the towing limits in the Smart manual), the hitch weighs 24 lb, and the trike weighs about 40 lb; the carrier manufacturer recommends staying below 50% of the official tongue weight, so I think I need to use the wind-load relief strap to avoid exceeding that limit while driving.