Although DPI 14/15 (and older Dragon professional versions) offer a lot of comfort to hands-free users, hands-free control of the mouse is not perfect yet. One of the features you need is the ability to quickly keep the mouse buttons pressed for convenient drag-and-drop operations. There are some advanced scripting macros for this available but they usually perform to slow to make them really usable.
SP Press Utility offers an alternative solution. Pressing of the buttons is done by means of very fast standalone executables. They are launched with DVC voice commands. Pressing of the mouse buttons occurs almost instantly. An interesting feature is that you can combine it with the powerful VoiceComputer intags. This results in highly productive voice commands like: "Press 15", "Press Right 6" etc.