Here is my dragon gym in the pics you will see no gym leader but I believe it comes with the schematic. Also keep in mind the gym is not suppose to be floating its just showing you the stone layer underneath, that otherwise would have gone unseen
https://imgur.com/a/UL8EJ
the gym is suppose to be like a small dragons cave
I got my inspiration from this http://xylius.deviantart.com/art/Lair-326821253 so details or tips to improve would be okay : ]
The gym has one spot where the default gym trainer would stand, it has a bagon,dratiny, and dragonair with ramdom moves and ivs
The gym leader on the other hand has these mons
http://hastebin.com/ujumuboxay.md
Download schematic at http://www.mediafire.com/download/dl36l ... .schematic