Firstly, in support of Peter Cs post 24/4, here is my miss-post from the survey thread::
The topic of ratchet straps, and associated damage was discussed on here, at
"ratchet strap protectors". It's important, imho.
https://www.swallowyachtsassociation.org/smf index.php/topic,1905.msg12569.html#msg12569
We are dealing with a flexible trailer, flexible boat, and stretchy (to some degree) straps. I wouldn't like to say which is "stiffest"?
Unlike my racing dinghy, my BRe and its trailer don't seem to bounce along the road, guess that's due to the all up weight? So, I figure that the straps are locating the load on the trailer, as opposed to attempting to create a "solid" load unit? My philosophy is therefore to try to ensure that the load can't shift significantly on the trailer, fore, aft, or sideways.
On my trailer, the keel rollers seem to take most of the boat weight, once loaded, with the swing beam and side rollers predominantly giving location? Is this right?
However, on my light (hull is less than 80kg) racing dinghy, i feel the need to be much more careful with securing the hull.
Being so light and insignificant a load, the temptation to speed is always greater. I have a serious sense of self preservation when towing the BRe!
I have made up a "spreader beam" from wood, this sits across the cockpit at the end of the dagger board case, right where the main sheet attachment turret is, a hard point. This coincdes with the wide bunk of the launch trolley. The wide securing strap goes cross the top of this.
These "hard points" in the assembly matter, imho. Don't strap tightly across wide, flat, unsupported panels.
.... I never did buy any of those fancy bungy-based straps, in other post, but then I've not towed my BRe significantly over the past couple of years.