[2019] Best way to grind xp now?

I heard maps got nerfed close to the point of not worth doing. Is this true?

I'm a solo player on PvP. My guys slowly quit playing but I'm level 57 and got on last night with hopes to tame a tiger and knock some maps out. Well by the time I got a sloop up, sailed to get crew, found a few maps.. A few hours had passed already. And all the closest maps were all under 2.0 quality. I think an 11 quality was almost 5 grids away. Yea F that. And I heard on official Discord map xp was nerfed too so I threw out all my stuff and scuttled my ship and just went to bed.

Today, I am determined to get xp. I don't want to do anything except grind xp. Which obviously includes farming materials to do so (ship, weapons, etc)

Sorry for the lengthy post. I'm just getting aggravated with how tedious this game is. Feels more tedious than Ark.

Anyways, what's my best bet for farming xp as a solo player until 2x ends? Maps? Farm alpha Yetis via traps and maces? I heard powerstones islands are good for xp by just killing stuff on them? Is that true? Which one do you recommend? Any strat? Is there any other methods with better xp?