Just one, on spruce twigs above an otter haulout. Pictures are a bit lousy, but note the round soralia beginning to develop on branch tips. It's not visible in this picture, but the pore that will become the "urn" that contains soredia was just beginning to open.
Our first look at H. sitchensis on the peninsula. On one of the first few large sitkas we checked, leaning out of the forest over the beach. This area is open but fairly sheltered from wind, directly below a swathe of big firs beloved by eagles that regularly visit the nearby stream to bathe. Around 5 ft off ground level, on a live defoliated branch maybe 20mm diameter. Thallus was facing ground, substrate branch was positioned behind some fully foliated branches that were suspended over the beach itself. Second pic by @aiva.
Confirmation ID by @eullstrom!