so ive been chasing 3Y0 Bouvet for years obviously never worked it but last month there was a pretty juicy activation from a fairly rare african entity that i wont name just cause i dont want this to turn into a debate about the operation itself. anyway the pileup was absolutely savage, probably 400+ stations calling at any given moment on 20m and i was running maybe 500w into a 3 element yagi at 45 feet so not exactly a super station.

what finally worked after about 3 hours of banging my head against the wall was a combination of things. first i totally stopped tail-ending because honestly i think that just buries you in the noise with everyone else doing the same thing. started listening really hard to where the DX was actually coming back and try to identify his exact split — he was listed as listening 5 up but was clearly favoring a narrow slice maybe 2khz wide within that. second thing was timing, i noticed he had this very consistent rhythm, come back to a station, get the exchange, send QSL 5nn TU and then there was almost exactly a 1.5 second gap before he started listening again. i started throwing my call in right at that gap, not when i heard TU but slightly after.

also switched from a 1x4 callsign format to just sending my suffix twice which i know some people hate but in a big pileup the op is just pattern matching anyway. got through on the third attempt after changing tactics. probably helped that propagation did a nice bump on my path around 1800z too but i really do think the rhythm thing made the difference. curious if anyone else does this or has other tricks that actually work vs the ones that sound good in theory

the timing/rhythm thing is real and i think its massively underrated. ive noticed the same thing on a lot of the big dxpeditions, the ops get into a groove and if you can sync to it youre basically halving the randomness. some of the well-run operations like the recent ones out of the central pacific, their ops are incredibly consistent and once you find the pattern its almost mechanical.

the split listening window thing is also spot on. that 5 up designation is almost meaningless in a huge pileup, everyone piles into the bottom khz of the range and the smart move is to find the quieter water higher in the split. ive had good luck going maybe 7-8 up when listed 5-10, theres way less competition up there even though its clearly in range. you do risk the op not hearing you as well depending on their antenna situation but its a tradeoff worth making when the bottom is just a wall of noise.

one thing i'd add is antenna polarization matters more than people admit. had a buddy running similar power to me on the same path to a carribbean entity, he had a vertical i had a yagi, his vertical was actually outperforming me into that specific path that day. sometimes you just gotta accept propagation is doing weird stuff and the 100w guy with a vertical at the right angle is beating your 1kw beam.

honestly the suffix only thing i've gone back and forth on. logically it makes sense since the op is just trying to pull a partial call out of the mud and complete it, but ive also seen ops specifically ask for full calls on their spotting page and then people still just send suffixes and the op gets frustrated and starts calling for full calls over and over which just slows everything down. so i guess read the dxpedition's operating notes if they post them.

3 hours though, thats commitment. ive given up after way less than that and just waited for a better band opening or a less insane time of day. sometimes the overnight hours in the US on 40m when the eu crowd has gone to bed thins the pileup out considerably and if your path works its way easier pickings