mmm yo crearia un clase bolitas y con un simple for se acabo el problema algo asi:
Public Class bolitas
Public posicion As Vector2
Public visible As Boolean
End Class
Dim bolitas(9) As bolitas
Dim texture As cls_graphic
Public Overrides Sub XNA_Draw()
spriteBatch.Begin(SpriteSortMode.BackToFront....
For i As Integer = 0 To 9
If bolitas(i).visible Then
spriteBatch.Draw( texture, bolita(i).position, etc....
End If
Next
spriteBatch.End()
End Sub
medio abstracto pero es la idea