The Small Hollow Frog is designed for fishing heavy structure such as lily pads or matted surface grass. For best results use short sharp jerks to get the frogs nose to pop up out of the water. Pause in open pockets and expect explosive strikes. Remember to wait a second or two before striking to set the hook firmly. The Large Hollow Frog is designed for fishing heavy structure such as lily pads or matted surface grass. For best results use short sharp jerks to get the frogs nose to pop up out of the water. Pause in open pockets and expect explosive strikes. Remember to wait a second or two before striking to set the hook firmly.