R_N I think you got your new White Whale with the February Update: Go Mark Enamorus.
So far its only announced appearances for Elite Raids are on Valentine's Day (Feb 14) from 12-2PM and 5-7PM Local times. So Raids aren't going to likely have plentiful participation to get junkers to transfer, much less looking for trades.
Want to heads up in advance in case you have a Gym near your Workplace or a Lunch site or something to hang around. It might be easier to watch and hope a crowd shows up for that to catch with your Daily Pass than hope the Mark Enamorus is circulating on the GTS like most previous ones.
Oh trust me Enamorus has been my groan inducing nightmare I've been waiting for ever since the leaks pointed to a Valentines appearance
The fact it's even more limited than I expected is just the cherry on top
Anyway I have gyms near* by but there is no real Go community and looking up specifics of how Elite Raids work I definitely do not have the Pokemon strong enough for 20k HP Fairy, it's probably not duoable and...I do not believe they're "EX Gyms"? So that's rough.
My best bet is:
1. Get lucky. If Enamorus is a "good" Pokemon I can at least see people want to fish for a good one while they can and might shoot out spares on the GTS, especially if they want more recent one-off Pokemon. I strongly suspect Go Marked Enamorus will have a microeconomy going on because it'll be the one way to absolutely guarantee your Enamorus isn't hacked. It'll be fierce...but possible!
2. Just directly ask for someone to do trade. There's bound to be one person who either gets 2 and transfers one to Home or just dumps it into Home regardless. The upshot to this is because it's a single stage Pokemon & I'm not looking to
keep it (although that would be nice) I can just do a touch trade if need be.
Side note: still really annoyed that Enamorus was not made catchable in the SV DLC.....
*In so far as there's a raid place that's like a 10 minute car drive that requires me to sit in a parking lot (& saw absolutely no one around on Wydeer raid day) and a 20 minute walk deep into another neighborhood (that does at least have one other person who lives there). It was enough to move the dial on the Mew & Meloetta research but suffice to say I did not beat the Wyrdeer.