I am syphoning out of my open fermenter into an open keg as the tap pulls through too much crud!
In fact my current IPA with 9g/l of dry hop pellets has totally clogged the tap up and I cannot even take a sample!
I've done a few beers like this... Best result has been by dry hoping multiple times. First one (say a third of total) in primary, but then transfer to another purged fermenter with the remaining two third of the dry hop. Transfer is done via silicone tube, tap to tap so there is no additional oxygen ingress to the target fermenter. I'll purge the headspace again with CO2 before bunging the airlock in.
This will get it off the first lot of hops and yeast cake/trub freeing up those first couple of litres at the bottom of the fermenter for the new lot of hops to settle into. I also tip the fermenter on a angle to keep the tap clear.
After a big long CC at zero,I find that I can package without issue.
Also - If you use cling wrap over the keg mouth a poke a small hole for a transfer hose, you can purge and then fill with minimal O2. Purge again after replacing the lid, and the beer would have picked up very little oxygen, and there won't be any left in the headspace.
YMMV, 2c, yadda yadda, whatever works for you.
Caveat: I probably go thru a lot of CO2. [emoji16]
