Actually "flimsy" is a term that originated in IAC and it simply refers to the paper printout of the sequence. It does not have to be laminated or anything like that to be referred to as a "flimsy". IAC does not use a call sheet, since the pilot is his/her own caller. The whole idea behind Aresti is that it is an easy to understand depiction of the sequence so the pilot can know what to do on the fly as it were!!