There should be other ways to obtain the Field notes.

[technole]

Hoping maybe being able to buy them with extra Boz coins.

Doubtful, look at Eureka. The notes if you actually read them have a rarity ranking on them for a reason. Also because there is a guaranteed route to notes today via duels even if you need to spawn the skirmishes and CEs.

There is automatic echo in Bozja when the instance gets too small and that also applies to duels, if anything they just make echo always available.