Hey, let me say first off, that I am no anorexic myself, and I am speaking from personal experience...Nemesis inferno has seats specialy designed for larger people like us, so that won't be an issue, I think they're in row 5, in the center of the set.Colossus is where you may have an issue, the restraints are very tight, and although I got into it (with the help of 2 people - years ago, a bit lighter now), it was very uncomfortable.Stealth is not bad at all, it may press down, but it isn't painfull so you'll probably not have any issues with that. vortex is uncomfortable, mostly due to my legs, but you may be slightly different.Detonator is also very good, because it uses ratcheted locking systems, you can lower it to your needs, as long as it it more than three clicks, you're good to go.I'm not sure about SAW, I haven't been on it yet, maybe someone else can shed some light on that one because I have also been thinking about it too.Loggers leap has no restraints, as is the case with Zodiac, so you will be able to ride those two with no issues.The restraints on tidal wave are set to a default level, they are ok on me, again, I have never seen you so I don't know, I would think it would not be an issue.Samurai's restraints are also set down mechanically, I didn't have an issue with it, but if it hurts, tell the person lowering them so.Slammer is just painful for everyone.Rush has nice deep seats and a ratcheted locking system, again, you can set it to your comfort levels, a member of the crew will let you know if theres an issue.Have a great day, and don't panic!