I also want to see these results. I've been a premium member only about 3 weeks and my returns have been negligible compared to what I invested. I have started saving up most of my spins and I will claim them all at once so I can get a decent amount of lottery tickets for an upcoming round.
I know that the free ones from the emails expire after 48 hours, so I've been using those instantly as soon as I get them.
But I wasn't sure about the premium spins and if those could be saved, but your post just answered my question, so thanks.