Start with a 14 or 16, Marmish, Wolfram, Diamond Jig or 'gill pill. Small and heavy, like to avoid split shot, darn dinks like to attack them when the big boys are finicky. If there smashing baits I'll go 12 or 10. Agree in plastics seeming to work better for some reason or half a PowerBait Micro on a 20. Not fond of going to the 20 but it's saved the day many times with decent fish when even a 16 was refused.