For me, i get a couple in a row, and then nothing for a while, so i stop entering, then something shows up on my doorstep, and i start entering again. It's a never ending cycle. lol.
Don't give up, enter them as often or every so often as you wish. When it's your turn to win, it's your turn to win.
So just keep entering. :headbang:
Over the years, I've noticed that sweeps are cyclic - there are usually more/bigger sweeps during the summer and at the end of the year, so the rest of the time seems rather barren.
Winning {for me} is also cyclic, so I take my own advice and just enter and forget it :laughing: