3537 is a 4-pointer right off Marble Mountain Sno-Park, and despite the busy climbing season it is easily possible to get in here and activate it. You might combine this with a summit of nearby LC-075, if you are feeling especially ambitious.
To get here, take I-5 to Woodland, then SR 503 which becomes SR-503 Spur, which turns into NF-90; turn left onto NF-83 and drive 6 miles to Marble Mountain Sno-Park.