Yeah I guess using the castle depends on how far from us this egg-shaped search area is. If it's super far away, like the grandfather tree (100+ miles), then for sure we should use it to get to the general area. Otherwise going on foot is probably easier.
I'm totally down for a water slide installation. Perry wouldn't fly down anymore with that. While we're at it, we could have Lawrance create a new GPS-like spell. Lawrance Maps, just input "Green Dragon Lair" and the magical algorithms use your location data to figure the rest out.
Using the castle, for a short hop then searching again on foot sounds like a plan.
The team in the castle, as far as I'm aware, was only team "Callahan", or NPC's.
I will, be expecting them, owing to their closer proximity to the high forrest, to be on heightened alert, possibly, ready to man the ballista's.
Depending on the "Partys" next move, Tazskan, or somebody, else will need to give the order soon!
Don't forget, the flying castle, could become a target, soon for a rogue elf mage, rider and his dragon!
Dai, as for Tazskan he will utilize, his pseudodragon to scout ahead first. Before blindly walking into an ambush or trap.
Neither, is he at the front of the party, being more of a magic user. Preferring the ranged attacks.