@TBTB
Don't worry, I know. I respect your statements and opinions. I love this forum for that exact reason as debates such as this, usually come up with a answer and help further everyone's knowledge. To answer your question, at only 16, I can't preach about having all the knowledge in the world.
That being said, I've assisted with builds and enclosures private and public builds will occur soon hopefully. I've never had a tank big enough to house them myself but I've had exposure to all three species on almost a daily basis due to my workings with monster keepers. I agree with your ID on that pic. It doesn't look like a hybrid and is most certainly not 5+ maybe 5 on a push.
My 7ft statement was in relation to the hybrid. I think, at least at the moment, I've mainly seen people house them in appropriate tanks for a while and then the person usually dissappears hence our lack of physical proof on the max sizes. Hopefully, my friend will join the forum and he can help document it.
I can't divulge how or why, simply because im not allowed too but I will soon be coming into hand with some large specimens of this hybrid, supposedly 3'+. If everything works out. I'll have one till it hits 4ft and then it'll go into a 2000g tank at a private location. I'd love to give more info but I can't just yet.
To FF,
I hope you don't take this as me flaming or anything like that because that isn't my motive in the slightest. I genuinely hope everything works out well. Heck, maybe you'll help indicate to which side the max size is more accurate! I'd love to see more pics!
Oh and one more thing, @TBTB,
You were one of the first members who's threads I started following on this site so to have this convo with you is pretty badass haha. If you have any pics of the 4' individuals you saw, I'd love to see them