Sports arbitrage can work, if you put the effort into it, and if you can find the right (meaning trustworthy) sites to place your bets. This can be difficult, some online sports books are not always reliable. If you can place the wagers in person, and find two different lines for the bet, it will succeed.

Do people really earn 5% daily? I don’t know about that, but last year it worked out quite well in American NCAA football.

I handicap American Football, and provide a lot of information for picking winners, and I have a pretty good track record. Each week, I provide an Outlaw Line, and provide ATS (against the spread) and SU (straight up) picks for all NFL games, and the picks are ranked by probability.
After the fifth week, I also provide Totals (over/under) picks.

I also pick every college (NCAA) game each week ATS and SU.

My site and my picks lend themselves to arbitrage betting you may want to check out how it works.

The picks are absolutely free.

Here is a link: http://www.football-free-picks.com

Good luck this season.