For me it was sunken rock piles on a weed transition areas. Water temps were in the mid 60's, with the air temp at 70 - 74 degrees. My lures of choice are crankbaits for those monster smallies. Usually Rapala DT's and a few other brands like Strike King, Bagley's to name a few, fished with 10lb Vanish florocarbon on a Shimano Crucial 7ft cranking rod with a chronarch. I have also caught some great buckets using a 1/2 ounce Title Shot jig with a Phenix craw on some of the outside mat edges of milfoil weed beds in 4 - 8ft of water.