The PFBC will be conducting more public meetings regarding smallmouth bass management in the Susquehanna River this year. They did this last year in Harrisburg and I attended and wrote a report for this site. I'll be unable to attend this year but I found the previous meetings to be informative and worthwhile. Being firmly in the "don't know" camp with regards to why the bass have declined in the Susky, I found the info at the meeting fairly presented (although inconclusive). Perhaps there have been some new studies and new info allowing for more solid conclusions about bass populations. Also this year, there will be 3 meetings in different areas allowing for more public attendance:
http://www.fish.state.pa.us/newsreleases/2010press/smb_meetings.htm
http://www.fish.state.pa.us/newsreleases/2010press/smb_meetings.htm