Bemuum3,
To answer your latest questions : Fiberglas and crankbaits go well together because of the limberness of the fiberglas tip. A fish can inhale a hardbait and "load up" a glasrod. Graphite rods, on the other hand, have inherently stiffer action, and at times really aggressive fish will literally let the lure be ripped from their mouths before a graphite rod reacts to the bite.
As for jerkbaits and spinnerbaitsand topwaters on one rod? not very often for me. I am 5'10" tall, and I find at that height that I am most comfortable (over an 8 hour period) throwing jerkbaits on a 6 foot spinning rod. Spinnerbaits - for me - throw best on either that little pistol grip I mentioned earlier or a 6'6" medium heavy baitcaster with pretty much flex in the tip. There are folks who throw 2 ounce ledge busters that would disagree ( as would the 1/16 ounce beetle spin crowd) but when I refer to spinnerbaits, I mostly mean the safety pin design ranging in weight from 1/4 ounce to 5/8 ounce. I throw buzzbaits and Spook type baits on baitcasters, while poppers get tied to medium action spinning rods 6'6" with a fast tip. Hope that helps