I can assure you all three that if you just start playing the same way in normal play with your deposits, then you will hit a few randoms.
The sad thing is that if you are betting the same size $100/spin and hit randoms, they won't mean anything to you probably
Hitting a random of $1000 when betting $1 is huge, but when betting $100? It's just 10 spins
The higher bet, the bigger chance of hitting, but it will cost just a little more also...