[HippieGypsy]

I've had experience with bungees and rubber tarp straps in the airflow vibrating and causing a lot more noise than you'd ever think they might. They both also loose a lot of their stretchiness/holding power in the cold. A ratchet strap or two would hold the boards down more securely. Put a twist in the strap wherever it's in the airflow and you will reduce the likelihood of vibration and noise, too.

 

[HippieGypsy]

How do you deal with muddy or dirty traction board if you store inside the van? do you guys bring extra tarp so you can clean it later?

A couple of big lawn bags are always in my utility bin. They didn't become a stock item until after the first time I needed them!

 

[HippieGypsy]

We haven't had to use them yet...

Those are the BEST kind of traction boards.