I've shamefully trailer'd my Big Pig for about a month. All over the country. In all kinds of road conditions.
The front was strapped down with very typical 2-point motorcycle tie-downs with maybe half the front fork travel compressed. The front wheel was rolled into a cheap Harbor Freight chock that was NOT bolted down. By itself, that would NOT be nearly secure enough for a bouncy ride. But when I anchored the rear down with a much wider spread, with the intention of the rear not hopping left or right, the whole package road extremely secure.
Hope that helps.