Without the rear strap the board can bounce a bit. If the front strap is towards the nose the board can slide backwards and out. It is a fail safe as much as anything. I have had 3 boards come off through at 110 after driving for five hours and having the wiggle free in the wind. I knew exactly what the noise was and looked in the wing mirror to see my prize shortboard pirouetting eight foot in the air before crashing to the road. Broken fin, no box damage and a tiny solarez ding repair. Gotta love old Creatures travel covers. The ones don't have as much rail protection unfortunately.

Agreed with thedrip
Two straps ensures there is one each side of the wide point so it can't slide back or forward.
Never had a drama with two straps, but I can see that if one DID let go you'd want it to be the rear. So for driving many hours at 110kph (ish ) I always put 2 straps on the front just to be safe

Please think about the motorcycle that may be behind you when you're laziness fails.

While driving grain trucks I've sucked a few surfboards off Wicked vans.

They just "wooden school ruler" through the air.

While traveling to a bush fire in our new light tanker, an oncoming road train removed our low profile magnetic emergency beacons and trashed them last week.

Secure them correctly and keep the public safe.

I once drove home from Dolls Point with two complete Bombora Tri-fin setups on the roof, and NOTHING holding them on. That's two boards, two booms, and two single piece masts with sails wrapped around them, all stacked a mile high on top of each other. Probably drove about 5km, at speeds up to 70 kmh. Can't believe none of that budged. Scares me just to remember it.

I drove from Ulladulla tocanberra with a pram unstrapped. Couldn't believe it didn't move.

Mackerel said...
I made it to work the other day with my pulled pork sandwiches and house keys sitting on my boot. Damn lucky as that pork was sensational.

You were sooooo lucky that I wasnt behind you.

Buster fin said...

Mackerel said...
I made it to work the other day with my pulled pork sandwiches and house keys sitting on my boot. Damn lucky as that pork was sensational.

You were sooooo lucky that I wasnt behind you.

He had white knuckles from holding on and a bad attitude for sure.