As some one who had to apply for SSI now due to a spinal injury, and I have several friends who were born with serious defects physically and worked with those with mental defects..I assure you, if Chris' internet business was known to the social security office, his tugboat would be reduced. You literally can only make so much a month before it is. If he's even making 400 a month, it would be reduced significantly. Effectively, if you can earn per week what you'd make for 10 hours at minimum wage, you can see your SSDI reduced by 1/3 to 1/2.
Most people realize of course working part time+partial disability is actually better then relying on the tug boat. Except Chris, Chris is Exceptional.