Hm... 15 meters is open every day on FT8. Every single day. Your on the wrong mode. Band is not "dead", band is not utilized for SSB voice because signals are low due to sunspot cycle. Just switch modes and keep on working stations. The band carried SSB signals during the ARRL contest last weekend, because contests will always generate enough traffic even when signals are low. Sure the bands "suck", what would you expect? But there are always ways to make a contact, and today that way is FT8. When and IF propagation ever returns to good levels, we can all "rediscover" SSB voice communications. Until then, switch to digital.