My Hooker harness only has 4. I assume you're talking of the 5/7 point aerobatic set-up, with two of the points independent of the other 5, with a ratchet mechanism. The only time I've used one (as a pax) we assembled the 5, then the 2, then tightened the 5 and then the 2 with the ratchet. Then tightened them all again while taxying. I came back with cramp.