So sorry, I missed the bottom half of your questions, although I do know how, the chub were calling and as the temperature outside my office window was an unbelievable 50 Fahrenheit I had to answer their call with the massive drop in temperatures forecast. I answered between preparing a small flask and a rove around various swims was the perfect work day evening tonic for me. Alas, the chub never turned up, another broken date.
I have used P-Line Halo Fluoro Carbon and it performed as well as any other Fluoro Carbon I have used but I'm far from being a lover of Fluoro Carbon to be fair and rarely ever use it apart from stiff boom sections.
I have also used their Voltage, CX Premium and the Fluoro Clear in mono and co-polymer as well as a couple of their braids. Being so impressed with the Extrusion being so good, I naturally tried most of the range.
The Fluoro Clear is the best long range casting line I have used but like so many other high performance cutting edge lines it has a very short life span. I was needing to replace it every other week and it is simply far too expensive to be doing that. Maximum stretching reduced it's breaking strain dramatically.
So, yes I have used quite a few P-Line main lines but still opt for the Extrusion.
As a final note at one of our British Carp Study Group meetings Terry Eustace (Gold Label Tackle) who was responsible for first making Berkley Big Game available to the U.K. market and latterly his 'Pro' lines (Pro Clear, Pro Gold, pro Distance, pro this that and the other) brought along his line testing machine and invited everyone to bring their preferred lines along for testing. This was obviously going to be a bit of a publicity stunt to show just how good his lines were - which they are. It did back fire a little though when my Extrusion beat everything else in the room hands down in actual diameter against actual breaking strain combined with abrasion resistance.
I mentioned earlier about having to replace the Fluoro Clear every other week. It was during a period fishing what seemed an inland sea at times and due to the features way out in the pit, the carp rarely ventured within reasonable casting ranges. It was no place for traditional gear but a superb place to help my work along in the angling trade testing tackle. There was a no shock leader rule in place so it was always a case of trying to achieve maximum breaking strain for minimum diameter to rule out casting crack offs. Suffice to say the line would be almost taken to breaking strain each cast (severely stretched) and the first weekend I used the Fluoro Clear I thought I had found the perfect line. The second week I was cracking off. I replaced it and it was perfect again, but the following week, crack off's. The Extrusion I used for a full season one year when I was struggling to source more. It was subjected to the same punishment week in and week out and coped with everything I asked it to do.
With my 37 year involvement in the tackle trade I have tested literally hundreds of different lines. The problem with the Fluoro Clear is actually quite a common problem with a lot of lines. A quick breaking strain test will reveal good results. A sustained pressure test or a stretch to the maximum test will reveal a lot more. I was first aware of this over 35 years ago when I found I hooked more carp on Racine Tortue as I did on the then common Maxima,or Sylcast. This was the beginning of me realising that if you want to gain a few edges then any old line would not do. The problem I soon found with Racine though was that if I became snagged and had to pull for a break (maximum stretch) the line that had been stretched was then useless and had lost a considerable amount of it's original breaking strain.
That was the start of my obsession with line testing to find both the ones I got more chances with as well as those that could withstand abuse. I guess stocking around 20 plus different mono's all the time over a 25 year period and regularly bringing new lines in I had the opportunity that most others didn't without having to buy multiple spools.
One final thing - yes I know it's dragging on but very relevant to everyone on this forum. Because line 'A' is exceptional in one breaking strain, it isn't necessarily exceptional in another and as much as I have sung the praises of the P-Line Extrusion I use the 0.15 (4.06 lb). 0.20 (6.04 lb), 0.23 (7.12 lb), 0.28 (12.08 lb), 0.30 (14 lb), 0.35 (19.75 lb) and 0.41 mm (I never tested it for breaking strain I simply use it when I need greater diameter for abrasion resistance) but I won't use the 0.25 mm. The breaking strains stated are my own test results using a Palomar knot so will be slightly less than you see on the spool which is the breaking strain with no knot.
Most lines have a rogue breaking strain that doesn't follow the trend, I have seen this with almost every line I have ever tested.