I attached a 12"x10" TackleWebs behind my seat with the bungees and a 10"x12" under my front hatch with hook-n-loop adhesive strips.
The one behind my seat is perfect for quick easy camera access (waterproof camera), maybe a few snacks or just about anything you don't want tumbling around in your tank well or under the deck. It's come in handy for my tagging kit many times along with my beef jerky. It's also great for holding trash like wrappers, discarded line, etc. I attached it to my Surf to Summit GTS Pro seat by passing the included bungee through the snap buckles so it's easy to remove if desired.
The one under the front hatch is for items that I want to keep out of the way. On any given trip, there several things in my rod pod, so keeping things like extra rope, a first aid kit, bilge sponges, and other things out of the way but available is great.
After several months of usage, I'm happy with the quality of the products and highly recommend them.