Even on websites that completely disable right-click, it's fairly trivial to view the html source of a website and see the link that contains a picture on a site.
Personally I think that trying to lock down content is against the very nature of the web. The people that are honest and are willing to pay you for your hard work will find a way. On the flip side, the people that plan to steal and will never pay you, will also find a way. The only true way to lock down an image would be to never connect it to an online service of website. That's just my opinion though, take it for what it's worth.
Another approach is something like +Trey Ratcliff
is doing. he actually posts his pictures on google plus for the world to see. Yes, you can actually right-click and save any picture he posts, but somehow he's still able to make a living being a professional photographer. Maybe you should try to contact him to find out ways to share your work for the world to enjoy, yet still get paid and be able to put food on the table.