That looks great !
Do the ukes have more 'bark' to the sound now? LOL
Did you use a template, or just put a layer of masking tape and draw the lines freehand?
I may put a sound port in one of my ukes, either a Fluke or Flea, and likely will go with an elliptical shape in order to get the size I want without going too large a diameter hole and end up having too little space left between the edges of the hole and the top and back...any thoughts as to if this is a good idea as opposed to 3 smaller circular holes?
MFC now offers a side port as an option and they are showing an elliptical hole, which is what gave me the idea..
I have a Ryobi hole saw kit (made for installing door locks) that I will use with an electric drill at low speed for the initial cuts and a dremel for finishing up.