"SIGH - First attempt at hitting the gyms"

#PokemonGO: So my first "serious" gym experience.There is a nearby gym to my house that I've scouted for a couple weeks. It's been held as a level 10 Instinct gym for ages. Finally went down over the weekend and I saw it had grown to level 7 Mystic. I took it from 7 to 0 in the morning (slotted a weak Flareon for training) and added +2 spots for it. By evening it was now a level 9 gym and I wanted to finish off the level 10 gym to slot in my pokemon (my Flareon had since been booted out and returned to me).I saw the bottom rung was a 2k Dragonite and I had the perfect counter in a 1600 Lapras. The gym was @ 42k/50k and each fight net me 625XP. So it didn't take too long.I double checked the surrounding area for other trainers and since it was late, there wasn't anyone around and no cars with people in them around the gym.After the last fight I exited as soon as I could after the Dragonite fainted, and I clicked the gym right away (I knew which pokemon I wanted to put in).shockSomeone had put their pokemon in before me. The gym filled the 10 spots.There was actually no remote chance I could get my guy into the gym since the sequence of events happened as quickly as possible. I've read about people getting ripped off by snipers plenty of times and I wanted to do whatever I could to prevent it.But training late at night, watching for people around, preparing your pokemon, and immediately clicking the gym wasn't enough to prevent this.Needless to say I had that disgusting ripped off feeling in my gut the rest of the night.If this is how the gym scene is - I can't see how I would waste my time scouting out and training up spots for my pokemon.Guessing there is no way to prevent this going further? Is there anything I could have done?Just feeling down. Thanks,Edit: Added some emo. via /r/TheSilphRoad http://ift.tt/2dMRPDQ