You guys are seriously endangering yourselves with those setups!
There is no where near enough space for the folded latch of the fireball QR to safely pass through those setups.
Also stay away from your local hardware store, you need marine grade stainless.
This is what I would recommend:
https://www.westmarine.com/buy/west-mar ... cordNum=42
Model # 111609 | Mfg # C0139-0525-W | UPC # 25282008407
O Ring, 3/16" Wire Dia. 1" Inside Dia. 500lb. MWL $2.99
Breaking Strength 4564 Pounds
** Make sure you select the correct one from the drop down, not sure if I can link to a specific one **
lots of space for that QR latch to swing through cleanly when you release.
EDIT: changed to 3/16", originally I had put 1/4" but that's too thick to fit in the Fireball.