There are a good deal of beaches in the area, but it's important to check the charts first. There are plenty of stretches were taking shelter in the event of bad weather would be challenging.
The area is popular in summer. Most of the good sites are leased by commercial groups. Outside of the regular season it is sometimes possible to use these sites with the permission of the commercial operations.
The Johnstone Straits frequent currents, and changing weather require constant planning. It's a good idea to plan accordingly and be flexible as to what is going to be done each day.
These sites can be very nice with benches and surfaces to cook on. Of course this also means extra care should be taken to maintain them, and ensure that when the commercial guides arrive for the season their sites are in better shape than when they left.
Unfortunetly not all the sites are so great. Hanson islets are an interesting site to stay at, but there is very little room to launch and land kayaks. Some fancy footwork is required.
There is loads of sea traffic through Johnstone Strait, both merchant and sea life. Carrying a Marine VHF is essential, and all crossing should be called in to the relevant chanel. Instructions are on the Johnstone Strait chart.
Rafting up is key for making important decisions like when and where to go. In this case our attempt to move upwards into the Broughton Group was thwarted by strong currents.
Kayaks pulled up along Sophia Island. Weather can roll in and trap you on one side of the strait so be sure to plan carefully, and expect that kayaking at night with less weather could be a requirement to get the optimal calm weather and minimal tidal act