Permalube is very, very cool. It's a way to heavily lube yo-yos, semi-permanently, and it works very well for loopers and two-handed yo-yos. I have done this to a pair of Tornados, and they are now the best two-handed yo-yos I have ever played with.

All you need is a plastic sandwich bag and some scissors. Other people have recommended other plastic bags, or even foil ketchup packets... they are done the same way. Cut a small donut shape out of the plastic - the outer diameter of the plastic should be slightly smaller than the outer diameter of the bearing, and the inner diameter should be slightly larger than the bearing's inner diameter. I cut two circles and put them both on one side of the bearing, you can put them on both sides or vary the number depending on how much response you want. Put them between the bearing and spacers, in the same place you'd normally put lube. That's all there is to it! They should provide a lot of response, this mod is recommended for loopers, not string trick yo-yos.

A picture will be provided shortly, if anyone asks for it.