Multiple finish coats???

[007Hookem]

I just built my second rod. It is actually my first saltwater rod. I heard multiple finish coats are necessary and I heard they weren't. I want to do it the best I can. The rod is An MHX L904W- 7'6"/10-20#/ 1- 1 5/8 oz. Im using it as a fluking rod. I used pro-kote medium build finish as the base coat. If multiple layers are necessary or even close to necessary I have threadmaster thin coat for the remaining layers. Also is there and "scuffing up" of the base layers before the new layers are applied? Any opinions welcome because I really dont know shit about this stuff yet. Thanks