I hope this post and the upvotes were sarcastic. Trying this method 4 times means that you have a 68%* success rate. You'd have to try it 8 times to even get to a 90% success rate.

* To calculate this, chance of success after 4 tries = (1 - chance of failing 4 times in a row) = 1 - 0.75^4 = .68