I use an angling ai tube mold & i mix hard & soft plastic 50/50 to get the durability i want but i only texas rig them too. They have good action & last a while this way.
I've had the oily baits when i first started using it a few years ago. Now i hang them by the sprue until i use them which could be quite some time & they are as good a bait as i've ever had.