Locating bluegill beds if one has an si unit can be relatively easy....depending on the size of lake....but, if it is a new lake, and if first time on it that might be a struggle. Just want to throw out this tip out about using Google Earth Pro for finding bedding areas. If you use the historical images you may be able to find bedding areas on the lakes you fish or are wanting to fish. It all depends on angles of the sun, when image was taken......ripples on the water...and clarity of the lake. It can be an arduous task but what else do we have to do when we are shut in during bad winter weather. Ive been doin this for a while and it has paid off for me on several lakes. Hope you all find this helpful.
Regards