so ive been chasing rare DX for about 6 years now and i finally feel like i have a decent handle on breaking pileups, at least on HF. figured id write up what actually worked for me recently when there was a decent EU-side expedition on 20m and 17m, not gonna say which one but it was legitimately a top 10 DXCC entity for most people.

the biggest thing that changed my game honestly was listening way longer before transmitting. like embarrassingly long. I used to just jump in with everyone else and wonder why i never got through. now i'll sit there for 10-15 minutes watching where the DX station is actually coming back, not where they say theyre listening. those two things are not always the same. expedition operators drift around their listening window and if you can figure out the pattern -- even vaguely -- you can anticipate where to park your VFO.

also split discipline matters so much more than power. im running about 500w into a 3el yagi which isnt crazy by any means, and i was getting through on maybe the 4th or 5th call consistently once i started doing this. before i was running 1kw and just carpet bombing the passband like an idiot.

the other thing is tail-ending, which i know some people have opinions about but done right its not really unsportsmanlike, youre just timing your call right when the DX station stops transmitting. theres a difference between timing well and just doubling on someone elses QSO.

curious what other people have figured out, especially for LP or wire antenna situations because i know not everyone has a beam

yeah the listening thing is huge and i think its the part that took me the longest to really internalize. when i was newer i thought more power was the answer to everything and i spent way too much money chasing that before i figured out that operating skill is probably 60% of the battle in a serious pileup.

one thing i'd add for the LP/wire crowd -- and im in that camp, running 100w into an EFHW most of the time -- is that timing and brevity are everything. like if everyone else is sending their full callsign every time, try just sending the last two letters a couple times and see what happens. expedition operators who are working fast often respond to partial calls anyway and then you give the full thing when they come back with a partial. saves time in the pileup and honestly gets attention because your signal isnt buried under 30 other stations all sending at the same time.

also 17m and 12m are criminally underused during a DXpedition when 20m is a zoo. ive had 5-minute pileups on 17m when 20m was completely impenetrable. dont sleep on the WARC bands during expeditions

tail ending is a rabbit hole lol. i've heard guys absolutely insist its cheating and other guys say its just good timing. i think the people who hate it are mostly the ones who arent good at it honestly

the pattern recognition thing you mentioned is real though. i noticed on the last big pileup i worked that the op was consistently coming back to stations maybe 1-2 kHz above where he said he was listening. took me like 20 minutes to notice but once i parked there i got through in maybe 3 calls. felt like cheating but its just paying attention