Tango and I had fun at Centennial Lake, celebrating Labor Day. He got to swim in the lake you see behind him. Unfortunately, we saw way too many dogs on prong collars. Some folks tried to hide the prong under fancy bandannas, but it didn't really do the trick.
If your dog pulls, there are much better alternatives than prong or choke collars. Try an Easy Walk Harness by Premier instead. Designed to stop pulling, the EWH uses leverage, not pressure or pain to alleviate pulling.
We use an EWH on Nemo sometimes, particularly if we're going for a long walk, or if there will be lots of distractions. It works great, and without pain, pressure, or discomfort.
Here's a picture I tried to take of the two of us -- a self-portrait, if you will. Except I only got Tango in it and it was while he was licking my face! Not the best self-portrait of the two of us...