I've just had a rather lovely day - fishing one of the Wye & Usk Voucher beats on the River Arrow (Beat 38, Mowley Wood).
The river was low and clear and fish in the streamier, thinner water were very 'nervous'. The start of this beat is slow moving and quite deep (the beat is delineated by two weirs) and it is pretty heavily treed throughout its length making for some testing and innovative casting techniques!
With not a great deal of fly on the water rising fish were hard to come by but I managed seven, all but one on a size 14 Orange Otter. Here's a couple of them.
The Wye and Usk Passport recommends a rod of 7 to 8ft however having started with an 8ft it was much easier amongst the trees with a 6' 6", 2wt - and a deal of fun!