Good question. And you've got me thinking - the Mersey is full of dabs and plaice. The dabs are there most of the year. I just wonder whether they would make a good bait for the thornbacks and smoothounds we have in the summer?? I think I might give it a go next year. I've seen big cod regurgitate small dover sole on a few occasions from the dock walls, but have never caught sole in my area.
Back to the tope. I think if you planned a trip for a long weekend in the summer and stayed mobile, you could get yourself a load of fresh mackerel from the rock marks (kept cold) and go for the huss at night or move to the beaches for the tope and bass at night.