ive got my own traps and get a good supply of crab of all sizes and find some crabs can be to big the massive ones are only good on 4/0 plus hooks ya better off using medium size ones and use 1 and a half or 2 crabs as a sausage
i live in holyhead but it aint me after the snakes allthough whites would be nice like thats the only bait we struggle to get in holyhead well there here just not of any size get every ther bait in large numbers hows it fishin your way we got a club comp in pwllfanogl in 3 weeks its either fish that one or the open in pwllheli which i came 9th in last yrif ive got live eel it pwllheli
i usually get the white reag when i'm after blow lug there aren't huge numbers but i reckon i could collect enough if i went for it, they are mostly kind of small though. I think almost everywhere i've ever dug lug there have been white's about.
On thing though is that they are slow growing and easily depleated, the large ones are about twelve years old.