Normal presentations place it near the bottom, where the bass is spending resting and searching time. The slow moving jig matches slow bass movements induced by cold temperatures. Plastic jig body colors that are associated with natural foods such as crayfish or panfish complete the package, making it a desirable morsel ready to eat. End result is a pickup by one of the better quality fish that are more aggressive and the first fish to become active in the springtime. Soft plastic jigs are great spring fishing lures.
Summer finds fish diving deeper to beat the heat.
There is a lot of food with crayfish and forage fish hatching out. Bass are warmer and therefore faster moving, full of energy and always on the move, ready to eat or chase at a moment's notice. Food is available on the bottom and swimming in the open water above. The wider variety of food items available leads to a wider acceptance of plastic body colors. Color and movement attract fish from longer distances.