With water levels dropping away a stealthy approach is vital. Many pools up and down the river have good numbers of fish in them. 

It can often pay dividends to rest a pool for a few hours to give the fish a chance to settle. 

Like tackle is definitely the way forward, single handed or switch rods will cover most situations, the only time a larger rod will be required is during strong winds. 

Small flies are working best, size 12 down to 16s on long fine leaders.