I posted this over there:
There are any number of solutions for tying/securing stuff:
https://www.amazon.com/Gladiator-Cargo-Net-Medium-MGN-100/dp/B003ZWKH3U?psc=1&SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-ffsb-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B003ZWKH3U
I have a hard, lift up bed cover on my Tundra. I take it off maybe once every two months. It takes three minutes to take off and I lean it against the garage wall.
In between taking it off, it makes my truck much more useful: Dry storage, lockable, and clean.
Also, the hard cover can be fitted for kayak racks depending on the type of kayak.