My old Circus Boat had a JE that was converted to JC/G style controls. Made adding a diverter much easier, got rid of those pesky accordion boot leaks and made adding a split bowl and droop much easier. Hi-Tech makes a shoe/ride plate combo I ran that worked rather well. If you've lightened the stern, the bias is now further forward making spinning out easier. Add a diverter then test. A turning fin is a last resort bandaid.