I have a 7'3" MH Fast action rod with a broken double foot guide that is closest to the reel seat. Can I still use the rod, or will it hinder my casting distance and it's overall performance?

You probably need to have the guide replaced. I think it would alter the dynamics of the rod as well as casting distance. You will also probably notice a lot of line slap around the blank just above the foregrip as well.

A friend was missing a guide on his rod. He was able to watch a few YouTube tutorials and do the replacement himself. Most of the time the rod manufacturer will send you a replacement guide. You would just need the epoxy and thread wrap.

ya it will hinder overall performance

Go find your closest tackle shop and ask who they know of in your area that does rod repairs. I helped hook a guy up with a shop in Tennessee last week. They charged $9.00 to fix it and it was done in a few days. He also found another rod he could not live without. That guide closest to the reel is really important to take the line and straighten it out in order to be pulled out without hitting the rod blank.

ok thanks, i was pretty sure it would make a difference thanks though