I have a few questions for you veterans of smoking.....hope this is the right forum to do so. 1/ I assembled the smoker, there is a water tray in the bottom, but no where in the instruction booklet does it explain when, or how much or how often to refill......what's the protocol on that? 2/ I am not getting much smoke billowing out of the smoker...a buddy of mine has one and said he gets a lot of smoke coming from his. Is little to no smoke billowing good/bad? 3/ Soak or not to soak wood chips prior to using....I've read on the internet virtues of both...what say you experts? 4/ Foil or no foil.....the booklet I have said not to use foil, but again, a buddy said he uses foil for the first half of cooking and then takes it off for the second half. Thanks in advance guys.