I am in the process of converting a keg to a keggle. I have the top cut and a lid for it and now I am about to get my couplings welded to the shell. I see some guys drill the whole slightly smaller than the outside diameter of the coupling and weld to the outside of the shell, while other drill and weld the coupling half inside and half out side of the shell. Why would somebody chose to do either method and what are the benefits of each? From what I have seen, the height that you drill your coupling hole off of the bottom of the keg is based on length of your pick-up tube, correct? I would also like to install a sight glass and thermometer. I would imagine the sight glass placement is determined by your particular setup. Is there any pros or cons as to where to locate it? I also noticed that guys that have a gravity system typically have their ball valve 90 degrees from their thermometer, while guys that have a single tier system have both in front. What are the pros and cons of these two options? My plan is to use a Jaybird false bottom with a center pick-up tube, but how do guys use the side pick-up tube? Thanks for any input.