Ok, it sounds like you are over thinking this. Don't talk yourself out of it before you start. First of all, it is good to know and be prepared but you also have to figure on the law of averages. You will not (or should not) have a ton of foreclosures. Like with rentals not all tenants are going to trash your properties, and so many other excuses people use to talk themselves out of investing in the first place. On the other hand, you can figure it into the cost of doing business.
I am not a lawyer, but I have heard of people having the buyer sign a quit claim and recording along with promisary note in escrow. Other land contracts offer the buyer who falls behind time, and then in some cases cash to quit their claim back and avoid judicial foreclosure. Other states are much easier to work in. But you CAN do business in ALL states, and make a profit. In a judicial foreclosure state that might cost you 2-3k for the process, require a larger downpayment and hold on to it as insurance against this happening.
Think about it, and prepare, but don't overthink to the point of not taking action.