Brendan,
I've been using using a snuffer for 4-5 years. Initially, I had grand plans of being able to set my spinnaker while sailing solo. A few attempts at doing so convinced me that my skills level was not up to that sort of thing. A strong sense of self preservation prevented me from further attempts.
Snuffers are very easy to rig and it allows one to very rapidly kill the spinnaker and quickly deploy your jib. They are not, by any stretch, a subsitute for a well trained crew. And I am sure there are some drawbacks; but at my age safety is of prime importance to me.
If you wish, next week week I will take several "how to" photos of and post them to this site.
Regards,
Dan
Acqua di Vita