Yeah, bad idea to have no circulation. I'm going to be installing a solid state controller for mine that runs it at low speed at idle and high speed for thottle positions over 50%. It will also shut off automatically whenever the engine is not running. Of course it isn't done yet. It will help the longevity of the pump and not kill the battery if you are KOEO.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black