All good Shoe, you're welcome.
I think what Darren was saying (not to put words in his mouth) is go ahead and open a 1000cr RG for a week...if only 17 enter, fine...close it after that and scale the payouts accordingly.
Heck even if 3 day cut off fills brought 15/16...most likely those same players would be getting right back in it...so you'd have 30-ish entrants a week-even if the same 30 players- vs 6 weeks waiting for #50 to enter.
I think it work well with less credit RG's as well (of course you'd need to change the name from RG to "weekly credit Tourney"...etc) heck, I could see 100's entering lower credit RG's through out the week...building a pot, giving WGT a larger rake, etc.
I know, sorta off topic of your original intent...but don't most posts go that way? ;)