Best spot for Razor Clamming?

Our family is planning to go to razor clamming on Sunday April 22nd (the day which was tentatively approved for the dig). In the past few years except last year, we could dig a lot of razor clams...but last year, we could get only 1 clam! It was a huge disappointment. So we are wondering if the location was not good even though we went to the same beach we've always gone....the northern part of the peninsula. We are really hoping that we can dig many razor clams this year. Could anyone give us advice on which location we should go? Thank you very much!