I prefer going when the tide's in, it means less mud on the dogs, but to be honest it's a lot more fun for them when the mudflats are exposed and there's more open space for them to run in. Rosie virtually never ran out on the mud before Bertie came along, and she tends to hang around with me until she just can't resist joining in with him.
We had a surprising encounter with a very well-dressed middle-aged couple. Both dogs raced over to them (odd behaviour) and were then jumping around them (again, odd behaviour) until I called them away. As I apologised for the mud on the man's trousers, I realised they'd both been walking a pair of ferrets each in harnesses and picked them up as my dogs ran over. Yes, I know any off-leash dogs should have good behaviour, but this is an area where lots of dogs are taken to run off steam, so personally not somewhere I'd choose as safe to walk a ferret. There are fenced-off dog-free areas there that would have seemed to me, personally, to have been a better choice. As the couple had both kicked out at my dogs, but only served to excite them further, I felt the mud was deserved, but kept those thoughts to myself. Thankfully the stinky cheese in my pockets overcame the lure of the ferrets.....