when people play de la riva i generally try to get the negative pass more than anything. i'll play with other options and bait them pretty hard, but i only really committ to the negative.
i'll norm. bob my hips back and forth to loosen the hook. next i'll rotate my hooked leg outward to put tension on his hip (rotated out like a butterfly hook), next i'll threaten a knee drive/baseball pass (whatever you wanna call it) until he over committs to defending that pass. then i'll negative over.
you could knee bar as well, but i'm not a flashy guy. i like passing.