I use the Deco boards w/ the high bag percentage as backdrops for my used fish and… the blue ones (I’m forgetting what’s in that one). You can line up about 5 along one, or run them all the way around the board… It’s an easy way to get a lot of bags as my con-goers LOVE their used fish, so I’m restocking them constantly! (and if I hire Jack when I first fire the game up, I end up with a whole bunch of gold bags as I go around restocking them all). I’ve probably got half a dozen or so “stations” of them.
It’s a bummer that it doesn’t seem to multiply your bag chances when you have more Deco around something, though it’s nice it’ll multiply the sales percentage.