Bob -
I'm sure that there would be concerns with private individuals tagging fish on their own. A number of problems developed with unauthorized tagging of bass several years ago. Having tagged being caught always result in a number of calls to the local bios. But more important are potential impacts to the fish; as has been discussed here a number of times with the fish handling skills of many of our anglers the fish don't need the additional abuse from additional mis-handling.

That said volunteers have been used in some tagging studies. Other agencies and consultant groups have also tagged fish for a variety of reasons.

If such an effort were to go forward it would need to be coordinated with local agency folks with some sort of study plan. The plan would likely need goals, objectives, what the training of those tagging the fish would be, who will be doing the work, how the data will be collected and shared etc. A clear statement of what are the likely gains and costs ($$ and to the fish) would also be helpful in assessing the value of such an effort.

Tight lines
Smalma