Philbuilt, it looks like you're the expert on here as far as windmills go, having first hand knowledge and experience. Glad you're here!
I take it that you did not buy their concrete mounting kit, but used 2" pipe somehow to anchor it? In addition to the $1700 basic unit, how much did it cost you total to get your system complete up and running? I'm guessing around $2k including the weighted hose, various valves and shipping?
I've thought about putting one up, off and on, for a long time. But yours looks so good, I think I'm just going to have to do it. BTW, Northern Tools is a distributor - but boy do they jack their price up! Koenders is definitely the place to buy from.