Sorry to say that the Yachats is closed:
Yachats River up to North Fork
including tidewater (Lincoln Co.)
• Open for adipose fin-clipped steelhead Jan. 1-March 31 and May 25-Dec. 31.
• Open for Chinook salmon May 25-Dec. 31.
• Only 1 adult Chinook salmon per day and 5 per year.
It is also closed for trout until May 25th as per general NW zone regulations.
Thus, the Yachats is closed to all fishing, even C&R. A couple of alternate suggestions: the Alsea is not too far away and open until April 30th (not sure if there is much to catch there or not at the this time of year) and the Red tail surf perch should be around in decent numbers in the surf.
Good luck.