For organic poly use a high damage dino (spino reaper) to kill crabs and let your moschops farm it. I pumped health and had a basilisk follow me (will work with most dinos you pumped weight on) and transferred the organic poly to it pumped all its levels into poly too
Feeding it what you want it to gather has NO EFFECT on its father rates. These are determined by the additional level granted every level to increase your moschops' gathering efficiency of your chosen resource.
Best for if you need fast polymer for crafting. I have used this countless times to make all the industrial equipment. But only level up health and weight and put the gathering levels into polymer. Mines at 530% and I get 50 polymer per penguin. ðŸ‘