I had the rubber lines and cheap hose clamps as well for a while, but you're right, the track tech guys hated those set ups..As my car eventually became faster, I had to switch over to real plumbing in order to get the OK to make a few passes up at the [now retired] 75/80 dragaway in Monrovia MD.
Ah, those were the good ole days...The smell of Cam 2 race fuel, and burning rubber.