I'd put some condos in the deepest part and then mats at various depths in the shallower water. Since there is no noticable structure to put the cover on, you can place your cover in such a manner that it is a trail in and out of the deeper water. You will want to do this in all directions to help you when fishing in the wind and it will help the crappie too when one part of the small lake is warmer than another.