I've never fished there but a couple of friends did 2 days running, early June a few years ago. Apparently there were a few sea Trout in, mostly small, and they only managed a couple. They can be seen from a bridge.The most successful methods are trotted or ledgered/swimfed maggots, or worms.
You've got the date about right for the Salmon and sea Trout so you could be in for a good day.
I'm told that a lot of duck feeding goes on and they concentrated on the big mullet with some success, using bread.
It doesn't take long for sea Trout to get a taste for bread so I'd certainly be taking a loaf or 2. Shrimps for the Salmon.
Using maggots for the sea Trout on a different pool, I have known them to shy away from loose feed but happily take a lone single maggot. Other times loose feeding can get them in a bit of a frenzy. Salmon take maggots quite well too!
Would be very interested to know how you get on.
Bass love Roach, Dace etc livebaits in these tidal pools too.
Cheers
Paul