While cleaning my boat up after the last run I noticed my port rear bolt of the Silent Thunder has fallen out... Do any of you happen to know the exact size of that bolt? I don't want to have to pull the other side to match it up. I am currently trying to convince the wife we should just remove it but she isn't onboard yet. She doesn't want it to be too loud!

pic for fun!

I can't help you on the actual bolt size but you can contact Corsa Marine if no one can help from memory ( Link below).

Great looking Fomula in the perfect backdrop in your pic!

https://corsamarine.com/

wow that one looks really cool.
What model and year is that?

if I had to guess that's a Formula 353 FasTech. 2002-2009ish
I'd float that