quote:The Bottom seats are held in place with a Bungy Cord to those straps
Are you saying your seats are not anchored to the floor?
I do imagine nothing moves out of place while driving . My concern about an un-anchored seat is the harness/seat belts/whatever you are using are designed to restrain a person's body weight. That design process assumes the seat weight is anchored and does not become some additional weight factor (Gravity G-forces and such) that the belts are NOT designed to restrain. A quick Google search shows just a hard-braking F-1 car generates 5g's. Say a seat weighs 60 pounds. That would be an extra 300 pounds pulling on a seat belt. Who knows what the g-force would be in a full head-on accident?
And on that same thought vein, if an un-anchored seat wasn't a safety issue, I imagine race cars could shave some weight (always a good thing for racing)by deleting their seat-anchor bolts. Right?