Mike/Tim;
I use two devices that necessitate running probes into the WSM smoker body. I bought and installed one set of Guru eyelets: one set has two eyelets in the pak. My Guru Digi-Q DX temp controller system uses both a pit probe and a food probe. Both of these Guru probes can go thru one Guru eyelet. This device is controlling my pit and reading food temps locally at the smoker, but has no remote transmission capabilities to let me monitor from inside the house. For remote monitoring, I used to use an ET-73, and both the pit and food probes for that device could fit in the other (second) Guru eyelet.
I upgraded to the new Maverick ET-732 recently. While I consider it a superior device, both probes are considerable thicker and heavier duty than the old 73. They will not fit thru the Guru eyelet at all. Not even one probe will go thru the eyelet, much less both probes as before.
Since the walls on the eyelets are thin and cant be drilled out much, my next thought is to go with the 3/8 inch drilled threaded lamp repair kit method. I suppose all four probes I use may potentially fit thru this one port, and will make for a neat cluster. Even if only the 732 probes will fit, I still have the eyelets in place for the Digi-Q probes.
Hope this helps make your decisions.