This is bordering on being another "why do I need a satellite tracker" thread, but it bears repeating: The technology is so cheap, so readily available, that there is no excuse for flying into inhospitable places without it. Whether you carry the more limited track-only SPOT beacon, have an InReach that lets you send messages about your most recent life choices, or decide a sat phone is your way of getting it done, it should just be a part of any mountain pilot's kit.
If you're one of the "ADS-B will let them track me" people, you can leave the tracking off if you like and hope you have time to hit the SOS button when shit hits the prop. Personally I think that's an error since the only way they will know your track on a beacon is if someone shares it, or you link it to a flight plan (also a good idea to do, if you file them).
Along the sharing your plan thoughts, tell someone where you're going to be. No, really. Tell them if you haven't sent an 'I'm OK' message after a pre-determined time, to look your track up and see if you made it, and call in the cavalry if it looks weird. If you have a messaging or voice-capable device, this is even better since they can ask you what's up (like maybe you made it to the field OK, but bent metal on the landing, or just forgot to text your OK message). If official FSS or radar tracking is not an option, get a friend to keep an eye out, or even just ask someone on BCP to do it. The "buddy flight following" system isn't perfect, but it can work as a 'plan B' as long as your buddy isn't a total wanker.
Fly with a 406Mhz ELT as well. You can retrofit the ACK ELT's for about $500, plus a GPS source if you need one - Garmin sells an all-in-one puck for about $85 which can supply that, or you can feed it from a handheld source. ELT's don't always survive, but it's one more positionally-aware source of information hopefully telling people where you are. Surviving the crash itself is just part of the game, many pilots get through that fine only to die anyway because nobody knew to (or where to) look for them. Step 1: Get lucky. Step 2: Get found.