We have a local mark that produces conger to over 30lb which I fish with a boat rod.Casting isn,t important as they are around 30 yds out and the shorter rod is much easyer to use than a 13ft beachcaster.I fish 50lb braid with 50lb shockleader about 20ft long , just drag your thumb lightly on the reel when casting.
Biggest problem is getting them up from the water 20ft below !