What i was simply implying is why fish a lake with a difficulty level that doesn't match the size of fish. If the op is happy to fish a long session for upper doubles with the very thin chance of catching one of the two 30's in there then thats fine, fill your boots.
You said in a earlier post " do i expect carp to jump on my mat" I've been carp fishing for 30 years. I have no interest in fishing lakes like willesley when the rewards simply aren't in there.
And as for assuming he wanted to catch 30's..... How many carp anglers do you know that get a screamer and think "bloody hell, i hope this ent a big fish"