Hi Tulmahk,
Just want to say this is a really good thought, I was thinking along these lines recently.
While I'm not sure if damaged sensors effect ones ability to detect cloak, I do think that a ships science officer is connected to the sensor sub system. Thus if you aim for that sub system there is a good chance you will injure and put the ships science officer out of the fight. With him out your opponent should have a much harder time locating you cloaked.
A good tactic I employ is stay behind the ship and wait for the player to jump to warp, they do this often if your cloaked for a while. When you hear the sound of their engines preparing to warp, drop cloak and fire a full volley at their sensor subsystem to put their science officer out of the fight early on.
Mind you this works for Romulans best as they can hit ships in warp compared to Klingons.
Nephlite Z`Ress