Have a tablet and don't want to take it out on the water for fear of getting it wet/salty/sandy? I've been doing this for 2 years now, and I thought I'd share. If you have a foodsaver or other similar food storage system, you can put your tablet in a bag, provided your system offers a smooth side, and seal it up. You can't charge it, or plug anything into it, but if you just want to use your navionics app, or read a book on the boat/beach, this is the ticket. The touch screen and buttons work like a charm. I don't pull a full vacuum, just enough to lay the plastic smooth on the screen. If you pull too much vacuum, your buttons may stick...