Based on our weather patterns we’ve had I’m gonna guess it’s in the period where we’ve probably got prespawn, postspawn, and spawning fish all present at the same time. Generally I would target spawners until about the second week of may (usually until water temps hit about 72-74 degrees) and then I’ll start looking deeper. The problem is that oftentimes they don’t really start to stack up on brush until about the second week in may. This trend tends to hold pretty true. I remember one year we were catching fish on lay downs in 4-5’ well in to may and a lot were still dark males so they stay up shallow a lot longer than many folks think. That being said I’ve had many a trips where they’re scattered up shallow and deep the first weekend in may and then I come back in a week or two and we’ve got a two man limit in a few hours.