That is a very cool setup. I'm glad they left you a nice note instead of a nasty one.
I don't normally post here, but I thought I'd just show a quick pic of my 15 gallon water setup. I know it's not as fancy, but for $20.00 it was worth it. I just used a bungy cord to strap it on. It doesn't have baffles, and you can hear the water sloshing, but it's handy if you need it, and have somewhere to put it.
I picked it up at the local cattlemans outlet. Like HomeDepot for Cowboys.(Feed and Supply Store).