Well, controlled environments is kinda hard, but people who showed up for him after we announced it seemed surprised he finally spawned since he never did before on our server, apparently.

We tried using BG-steak theory as soon it was posted there, I was having my pt making food and eating it through the zone when one of them had it popping in front of him. The second time I was alone and eating NQ Vendor food, popped him myself (it was after maintence).

As I said, he *literally* popped in front of me while I was running into the most know A-Rank spots (Here's a pic of the second time we spawned it, sadly I forgot to take a picture before the horde showed up) Bonnacon, 1000 and Zona Seeker always spawned randomly through the zone to us once triggered, but Brontes has been pretty consistent in spawning in front of the ppl who triggered it. BG Hunt thread also seems to confirm this.