The STUBs system runs initially in a very similar way to what you may have seen from someone like our partners at in the sense that the STUB token you receive in and of itself is simply a receipt for your proof of deposit.
Where things start to change is our plan is to work alongside other partners that have their own yield farm capabilities to allow them to create farms that can utilize our STUB tokens which will be specific for whichever type of LP you deposit (ie; you deposit DFY-XXX LP on DefySwap to farm, you receive DFY-XXX STUBs to match). You then can stake these STUB versions of your already yield earning staked LP and ALSO earn the native tokens of the partner farm from the receipts themselves.
In this way, we will be working towards offering a means of claiming dual yield farming and dual token rewards simultaneously!