Hydraulics are redundant? Erm... No...And no, when re-checks occur, they are not focusing on the belts... What a silly notion that is... Re-checks are for when the restraints themselves may not be down enough to be 'locked' according to the ride system, the seat-belts are just an extra feature...And some lap bars DO feature seat-belts... Many of the Intamin hypers, gigas and early Acceleratos ALL feature seat-belts are part of added safety features due to accidents occurring on them... So often they are a necessity and not a stupid thing...It's generally a massive case of "What If?"... I would rather parks be safety minded... Seat-belts do indeed affect dispatch times, but really, for the sake of guest safety (as a whole), they are quite frankly warranted...