Sinking would be another story.......If they look out of proportion they probably are!........here is a starwalker with 8/0 inlines........i went back to 7/0 after this..............However i have heard of people using 8/0 on the sinking ones and they look huge on them......Hope this helps a bit......9 mm splits will do.....Im a big fan on Decoys over owner but owner are still good......You can of course always ask the person you have bought the lure off for their advise as well....If you can track down the shogun viper inline 7/0(they are actually classed as a jigging hook).....you can try out and then you have someone to blame if you are not happy..........you will get enough hooks per pack too and reasonably priced.....seek and you shall find......Probably Decro or Decero (not sure how its splet)....sure they will have em.....torpedo 7 used to sell em too....you will get a really nice walk the dog action out of the lure you mentioned......just dont sweep too hard....wait for its nose to pop up and leave a small amount of slack in line before you begin your sweep and it will dart under and wiggle really nice.......have a pause before your next sweep and you will often get nailed at that time....while the lure is popping its head....Good luck

Have some VMC inline singles, 7/0, they look a little lite on it for 180 oceas, but over size on 140mm orca or yozuri stickbait.