hi guys
on the hooker style jigs ,i use trebles and on the rest i use assists.the tin spinners we use in the cape only come with trebles and are used on every tuna commercial boat so trebles work well.as to were the fish grabs the lure a 40-90kg yellow has a huge mouth and i have had them hooked in the corner of the mouth , top of the mouth or in the gullet using trebles .with assists either in the corner or in the inside of the mouth have had a few jigs totally swallowed.
cheers mark