Whilst agreeing with some of the posts on this thread advising caution when using 'hook and hold' tactics, I do think there is an element of jumping on the band wagon to criticise this fella in a typical forum 'blood letting' frenzy of blame
In my opinion there are one or two points to consider before 'casting the first stone' as it were. For instance, how many of the swims we all fish day in and day out have a snag of some sort, somewhere within reach of a powerful fish? My guess is probably more than half in many rivers.
And what do we all do if/when a fish eventually heads in that direction? I will tell you what we do, we put the brakes on that fish, stop it dead in it's tracks....or are we all going to deny the excited reminiscing in the pub, along the lines of "I had to put me hand over the spool and hold on for dear life to stop it getting in there".....sound familiar?
Know before you all jump in to give me the inevitable kicking for saying that, I KNOW that what I have just described is different to deliberately fishing to a snag, where hook and hold is essential and inevitable. However, one of those differences is actually in
favour of that style of fishing, and because of that is more readily accepted as a legitimate method in carp fishing circles. If done properly, with total lock-up and absolutely no line given to the fish on the take, then that fish has nowhere to go....except away from the snag....and thus to a safe, playable area. The second point is, when fishing locked up, the fish CANNOT gain traction and thus pick up speed in the direction of the snag. It soon realises this and heads off away from the pressure, not harming itself in the process simply because it can't get up a head of steam if it cant tear off....it cannot exert anything like the pressure when it is at a standstill and unable to get up speed...untill it heads away from the snag.............
Conversely, when fishing a more open swim, where the fish HAS gathered full speed and is charging towards a distant snag (the one you hoped and preyed it wouldn't head for

) and
then requires stopping.....that is when damage is much more likely to be done. The fish now has speed and inertia on it's side, and locking up then is fraught with danger....for the fish.
So, in my opinion, for what that's worth....things are NOT as black and white as it first appears. There IS validity in fishing locked up, but here I would agree with the previous posters....ONLY if it is done correctly. Otherwise it is, as said, a dangerous practice and should be discouraged. Mind you...some would say that the same could be said of fishing in general
Oh...and while I am discussing carp style practices....there is another post running at the moment about fishing 'clipped up', where a number of members are saying they don't do it because of the risk involved if a large fish goes off on a long run

PLEASE be aware that the correct method is to mark the line once you have arrived at the required distance, either in line with the tip ring, line clip on the reel, or wherever you deem suitable (using pole elastic tied on, electrical tape stuck on and trimmed, etc, etc.) The line is then placed in the clip on the reel, and the cast is made. The line is removed from the line clip
immediately the lead/feeder/whatever is on the bottom, and then the line adjusted as required and the rod placed in the rest. Obviously, as you start the retrieve, the marker is re-located and the line placed in the clip again using your marker to guide you, then the retrieve is continued, before casting out once more. To leave the line clipped up while fishing is, as rightly feared, a disaster waiting to happen....it is a total no-no.
I know the strange snobbery rampant in all sectors of our sport requires that we all denigrate 'the other lot' and their chosen prey mercilessly, with barbel anglers labelling carp 'pond pigs', 'mud slugs', you name it....and those who fish for them being roundly looked down upon. However, that is a shame, because there are many things in carp AND match fishing that barbel fishers would do well to take note of and learn to do properly....and vice versa of course

Cheers, Dave.