I agree w/ Mr. Carl, F-3 and F-4 are perfect. If you don't buy "flatfish" brand lures, ie Kwikfish, Lazy Ike etc. about 1"-1 1/2" is about the right size. In addition to the good old froggy, orange w/ black dots has always done well by me. Remember to troll real slow with the flatfish style lures to keep the action right.