yeah, bookies not paying is a risk, but after a little while you learn which bookies are trust worthy and which aren't and as long as you stick with trust worthy ones, you should be ok, especially in the long term.
i do track surebets manually too and i also use aggregators, or surebet monitors as they call them. manually i usually stick to 1-2-3 bookies and a handfull of events while with automated monitors you can track more sports books and cover more surebets.
profit wise, in-play betting manual searching is the most profitable for me.
Thanks man, that's some valuable info there. Hopefully wagerr comes along to help all those whose countries make sports betting illegal.