i have to admit that the pole in the wrong hands can and quite often is bad for the carp, but the qualifier is 'in the wrong hands' if a match is arranged on a water known to hold carp in the doubles then most of the fault for damaged fish is down to the event organizer.
as most of you know, i often use the pole (among other methods) for surface fishing for carp and yes it can get hairy but no more than on a rod if you know what you are doing.
for one thing Nick, the pull on a large fish should NEVER be up unless you are filling the net with carpy goodness, i personally ship in two sections then drop the tip under the surface, this not only exerts the pull to the front side or rear (whichever way the carp is pulling) but also aids the elastic to behave more like a flexible line.
while landing fish up to low 20s i have only ever lost one and that was a ghostie who TBH was too close to an overhanging bramble.
my set up is an 11mtr Leda Assassin carp with #14 elastic and 4ft of 8lb bottom to a #10 wide gape barbless, this ensures that the bottom is way weaker than the main as it should be and given the flexibility of the main and pole it should be the weakest link.
my pennyworth anyhoo