I've got the original long beam at 16 foot which is rated to cast 8oz,
Worked ok for me as an overhead thumper with a fixed Spool
The extra length in theory means you could design some interesting rigs,
But be prepared to stand well back from your rod or get a neck ache.
Needs a tall tripod to take full advantage and counterbalance it.
I prefer my Tip Tornado LD but I would use the long beam in a heavy surf, the length means you can get more of the line up high and clear of the water for one thing, handy when there is weed about.