out at Jumpinpin, the 2 main plastics we have used so far that has got us a hell of a lot of flathead have been... Berkley Gulp 3" minnow grubs in pumpkinseed
(depending on current i usually use a 3g squidgy jighead) or a 4" Squidgy Pro Fish in watermelon. Keen to try some 100mm though see how they go
Ben...