In competitions the "People's Choice" category is becoming more popular because, well, people smell the smoke and want to eat BBQ. Seriously, having a BBQ event where the public is not allowed to sample is a recipie for disaster. Public sampling is similar to catering just with a smaller budget, menu, and on-demand service.
In order to feed hungry event visitors we have to comply with local health district regulations. Those include monitoring meat temps during overnight cooking and hot holding. I understand that they are just trying to be helpful is preventing food borne illness. We don't want to be getting people sick either. I am just at the point of looking for a better way than waking up every hour and keeping paper logs that need to be deciphered or reconstituted if they get wet.
The iGrill looks interesting even though I don't own an iPod or Apple device.