Well, the Vita has a touch panel on the back that can be used instead of the front
Note: I had thought of using the ps vita's rear touch panel, but unfortunately the developers for ps suite have no intention of supporting it=-(.
the mechanics of the game at the moment is that the challenge is "Holding" onto your ball, and not letting go/being impacted by another ball, so unfortunately this idea doesn't work in the design scheme for my game.
You could also use a point-and-click idea wherein you tap where you want the ball to go and it rolls there.
I had thought of that as a possible solution, you'd still be holding on, in a sense, it'd be like a pulley.
Also, you could drag the ball by a rope or string that way you have room to see the ball and where it's going.
I also talked with a colleague of mine, and he suggested, that instead of dragging the balls, instead, having the player draw lines, or edges, onto the field, which is used to protect and/or deflect your ball.