you may have caught a couple of late spawners that have not fattened back up yet.I did have one in our last tourney that was close to 4lb that went belly up 5 mins after putting her in the livewell and then she would not go down when we put her back even though she swam great,i caught her deep and if i knew how to de-flate her i think she would have been ok but another fella took her home.They seem to very healthy weight to length ratio i think,some limits of small keepers are hitting the 11lb range so that's pretty good i think.