I was out fishing Pete. Don't worry, I can handle you any time of the day.
First of all i'd like to empahasize (yet again) we're talking bait here huh? So that's not carp food. I make a difference in that. To me that makes sense, because fish in a 'closed cicuit' (a tank or garden pond) need a full nutritious diet. Makes sense. I totally agree with you on what i read and of what made sense to me. All the documents we have read on attraction with carp are based on studies in closed cicuits/natural invironments. So if we are making carp food i would say: Way to go!
Now the situation we are alle more interested in: Angling in big lakes with many other anglers to compete with us...To illustrate what i am trying to say, I shall give an example from my own bait experiments. Reason for this were the poor results in full summer the productive angling times around spawning time.
The years previous i had fished a bait with a nutrient balance of -more or less- equal parts (whatever's left of it after boiling anyway). So 33% protein, 33% fat, 33% carb. Of course some vit's etc. I used the bait all year around with good results. Looking at it now this doesn't surprise me. Also i calculated 4 cal per gramme of carb, which should have been 1,6. Concidering that we could say i was using a food bait.

With hardly any other anglers at the lake I was happily catching.
Around 2000 things were changing. The lake got crowded and my catch rate went down. I accepted it as being competition, till one day I decided to fish baits with different 'attraction signals'. So one rod with a very high protein fishmeal bait, one with cooked spuds and one with a very oily nut bait. Protein, carb, lipids. I waited till after the spawning time 'protein period' and started fishing three rods on the same plateau, switching after each take. The results were very clear:
70% of the time the protein won. Was to be expected. Every time the carb wouldn't stand a chance. It did 20% of the time though without the protein having a chance. I had several nights of fishing the little spuds outfished the protein 5-0. I was amazed. From 2001 on I have been able to repeat this Pete. Every year when the lake fishes poorly and all the lads are complaining, i have a few weeks of happy angling on particles and potatoes.
So... since i can repeat this every year, i assume we could call this sience. Carp BAIT isn't carp FOOD.
So Pete, according to me your view on bait is a bit oldfashioned ok? I hope one day you'll accept the fact bait is a supplement to the nutritious situation in the lake at that moment in time. Ans since this one is changing all the time,, the best bait is not to be produced, but is chosen at that moment in time by the angler.
This is the last time I spent energy on your never ending quest for something that doesn't exist.
