So look, here is what that whole sequence set up. The dragon has murdered a mando before, and when they were snatched, other mandos followed it until they ran out a fuel. So instead of going back and getting a ship, then following the heading the beast was on, when they lost it, they just fuck off, "Guess we didn't like him that much." The longer the line the narrower the propable course was. So if they have 30 minutes of fuel, thats a pretty damned good idea which way it was going. That heading to search on, will always be there, even if the mando that was taken is dead. So even if they had no ships currently on world, as soon as one gets back, it should have been off to the hunt.
It's a stupid fucking animal, not Emperor Palpatine planning order 66; it's going to fly in a heading towards it's nest, after it has found a meal.
Mandalorians are supposed to be some of the best hunters in the galaxy? Psh, a fucking girl scout troop could have found that nest the first time it happened, with all the information they had.