Before you can successfully catch tuna, 'tails and dorado around kelp paddies, you have to find them. And this can be a real challenge on the open ocean. Savvy anglers know that offshore banks and canyons cause currents and upwellings that can concentrate paddies. Well-known offshore banks like the 277, 43, 181, 182, 209 and 302 fathom spots are all fertile hunting grounds, as are the many high spots from Catalina Island to below the Mexican border. Check fishing websites, visit tackle stores and call buddies to find out all you can about where paddy hunting has been good.