I trim my flat so that it is just wider than a turn in box before cooking it, that way slices are the perfect size to fill the box. My slices come out of the middle of the flat as well.
I also "cube" some of the point (faux burnt ends) and include with the slices. Scores pretty well.
My Boys: Joseph (EI); Andrew (EE); Daniel (EE)
My Toys: 11 WSMs (B, C, E, DH, DA, EZ, DZ, EO, DU, DR, EE/DU); 5 - 22.5" Bar-B-Q-Kettles; 2 - 18.5" Bar-B-Q-Kettle; 3 WGAs (EZ, DE, N); 2 SJPs
( DR, DR); 2 Smokey Joes (A, K); Genesis Silver C (DU); Brinkman Cimmaron; Chuckwagon Cooker; .
"For when democracy becomes tyranny, those of us with rifles still get to vote"