Evening David . 6-8lb line depending on the weediness of the swim , size 12 or 14 hook . Biggest carp , just short of 30 lb
Thanks Mike, that's much as I thought it would be.
Now, I know you will already be well aware of all that follows, and no doubt will have anticipated my response the moment you read my question
However, because your thoughts are reasonable, I decided to bore you silly with my counter thoughts anyway
In my opinion, in a normal, average, old style carp fishery, the tackle you describe is not suitable for those setting out to deliberately catch these fish. As the carp in your lake go up to almost 30lb, then that is definitely the case. You could (and I have) land 30lb carp on 6lb line and a 14 hook, no problem...in a snag free fishery, or clear area of a fishery. However, where snags, lily patches, weed beds etc. are abundant (in other words, your average carp lake) it would be daft if not irresponsible to make a habit of fishing for them with such light tackle. The now immensely popular, purpose dug, snag free commercials are totally different of course, the carp match lads happily use lighter tackle than that regularly...no reason not to in those ponds, and it works beautifully (although the average size of fish is of course much smaller than 30lb)
The tackle you use for tench fishing IS vastly better for inducing a bite from a carp, hence why you are getting them...and the carp lads are not....it's not a mystery. Small baits, small hooks, light line IS going to get you more bites from carp, end of. Getting them out consistently on that gear is another matter however...if it could be done, it would be done. Also, the lower the stock in a water, the more challenging it becomes. Catching carp from very low stock, traditional carp lakes (which yours is patently not) where bites are a rare occurrence, frequently requires that your bait remains in the water, undisturbed, for very long periods (sometimes days) to stand any chance. In those circumstances the bait needs to be tough enough and large enough to withstand constant nibbling and/or avoid being taken by small fish. That is precisely why boilies were developed, and things such as tiger nuts are used, you absolutely cannot do that with maggots etc, it's just not feasible. Also, the larger sizes of these baits are not suited to the use of small hooks, it doesn't work. Horses for courses mate, a compromise between the ultimate in attracting a bite, and the tackle to do the job reliably in your average carp lake. A couple of maggots or casters, or a single grain of corn, a tiny cube of meat, whatever...on an 18 hook to 3lb line, with constant feeding, would get you bites all day/night long on many of the more prolific waters...but it would be totally unfeasible on the more traditional style of carp lake.
Just my thoughts mike.
Cheers, Dave.