14 Muddies in 1 day!
Mate, you must be kidding, I have targeted mud crabs in this area for a long time, they do exist but in the number you mention seem unrealistic.
Its a shame your picture doesn't show the Hawkesbury, just a crate of well ties crabs.
We all have great days out but for a haul like that the Sydney Fish Markets would be my call.
Negative first post, but I don't like peolpe getting others hopes up for nothing, petrol is too expensive.
I'd love to see you prove me wrong, maybe a few photos of the crabs with your boat on the Hawkesbury.