At the bottom of the strike zone?
Yes. Put a rag few feet in front of home plate and throw at the rag. Learn to throw the pitch at bottom of zone where hitters will often take it for a strike.
With the low rise do you get the up and away curveball spin?
riseball - not following you here. You want to throw a riseball to a rag that is on the ground in front of home plate? Why would you do that? If you atually aimed there, the ball would bounce in front of home plate and would never be called for a strike.
Maybe you meant BEHIND home plate. That would make more sense...
Re you familiar with Kentucky windage? Same principle here. It is often a leap of faith for them to throw a rise that low. Knowing that where they throw and where it ends up are often entirely different, or many a rag a few feet in front works well. But if they start actually hitting the rag or somewhere in front of home plate you adjust.