Joey,
You said it - tiring. My wrists kill me after a long day at IRI bouncing bucktails or jerking metal with my 8' conventioal setup. Working poppers is a little easier but bottom lures really takes a lot of work.
I have a 9' tuna stick (conventional) that I used to use for San Diego tuna fishing. I have tried to use it for casting lures in the 2-4 ounce range at the surf. Too heavy to hold the rod with the conventional reel on it for hours at a time. Maybe a light graphite conventional rod would ease make it easier to use.
IMHO - If you want to cast plugs in the ocean, get yourself a 9' spinner so you can use it all day long. (That 9' Tica spinner looks really sweet matched up with a spinning reel that weighs less than 20 ounces

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Don't get me wrong - I love conventionals and have at least a dozen of them but I would go with a spinner for casting larger lures (over 2 ounce) in the surf.
Just my .02.