I've tried both aerial solo methods not using a Griffin.
A Tapejara, while harder to catch because of how skittish they are, takes much less resources. You can either land the Tape or use an Archaeopteryx to switch seats midair (then throw away your poor archae). Tape method just requires landing (or an optional Archae) + tranq darts/cbow tranq arrows whereas Argie method takes grappling hooks, parachute, and tranq items.
The fun way is to jump off and grapple to your argie and whistle it to attack and since argies are slow it won’t catch up in time so tranq till it goes out also bring parachutes and consider liking so more people will know
If you drop a quetzal due to knockout, and it lands next to a giga...just know, the quetzal belong to the giga. Now you get to watch your would be quetzal get eaten by a giga. Now you can go home and cry.