1st paragraph above is categorically stupid!!so.. if 2 chains are better than 1, 4 is more better ??
you could make the same statement about securing a tractor to the trailer. 2 is probably the legal minimum, 4 'sounds' better, 6 might be perfect,oh yeah, here we need one for each bucket too.
In 5 decades of pulling all sorts of trailers with things on board using everything from caddy to jeeps to pickups over highways to real offroad 'roads', I've yet to lose a trailer. Not to say it doesn't happen but has to be very very rare, and I live next to the busiest highway system in Canada and the news never reports that. Did have an idiot drive a bigrig dump trailer INTO the Burlington Skyway Bridge few years back. Drunk as a skunk, OPP didn't test(open bottle in cab) , and word is he's driving again....