Watermill Wijlre

I went to the watermill in Wijlre today to search for the cache of a multi-cache Bert en I did in September. We could not find it then and I did not find it this afternoon. I cycled to an other point where I could have found a traditional cache, but couldn't find that one either.
Perhaps I need a proper GPS-tracker to pinpoint it out for me, instead of my mobile phone. Or maybe I'm fit for this game.