I think the most useful tool that I noticed on previous blogs is being honest and keeping track of your actual weight and measurements. This is crazy hard to put out on the internet, but here goes.
Heaviest weight: 285 pounds, just call me Big Mama (9 months pregnant with my son in May, 2011)
Post pregnancy: 270-280 until May 2012
Current weight: 265 and holding strong.
(did get down to 255, but i think that was a fluke because it only lasted a week or two.)
Hips : 51"
Biceps: L: 16" R: 16"
Thighs: L: 31.5" R: 31"
(Maybe there is hope for an hourglass figure??)