I play a fairly tight game [17/8] and really dont have much a problem handling 8 tables of FR if thats all Im focusing on really. Sometimes its your turn to act at several tables but most of the hands you play are going to be fairly standard so they dont take a lot of thinking. Im sure 6max is an entirely different animal, but it can be done, and it can be done very very well [read: lolo at the $2000NL tables at party]