So last year (2014) I ran only the full marathon. I entered a half time of 2:13 for my proof of time. That got me in corral H for the full.
This year I decided to run Goofy and entered the same half time for my proof of time. Based on Goofy numbers last year, I would be in K this year for both races. Assuming the distribution ends up being the same, I am not overly pleased with this.
While the K placement is probably correct for the full, I should probably be in E or F for the half. I base this off the fact that my wife entered a proof of time for the half this year of 2:10. Based on last year, she would be in corral E. Once again, assuming the distribution is near the same this year, there is no way a 3 minute difference would drop me from E to K for a half.
I really wish RunDisney would seed correctly for both races. What it looks like they have done is put you in the slower corral for both races.