Dooglus thanks again for the reply, I will cut a lot mine in order to be brief. The presence of a big and slow digger seems to give headaches to a lot of CLAM holders.

What about capping/limiting the amount of CLAMs which can be digged daily (example: no more than 200 CLAMS per day)? The available limits can be given randomly to diggers who wants them. In this way we are still 'fair' towards prospective diggers and at the same time we give a 'time advantage' to current holders which are, of course, more important than future unknown ones.