April would be pretty early for Wye River or Crab Alley. May also for rec crabbers. If you live around close theres nothing to loose to try. Now commercials may start early but keep in mind that they may run 3000 feet of trotline which increases the catch. That said its a hard works day for them also till it gets into summer. the same is true with crab potters they will run many pots for the catch in spring. no harm trying for a rec crabber however..thats why you will hear of some good early catches because they were out there.
lets hope for a mild and dryer spring then last year!