Do you think it's good to shuffle the HOT category once a week? Like on the weekend?
Yes, and you should. reason being, the Hots have the highest turnover and, scheduling in the first pass, they almost always schedule 1-2-3 in rank order. if you're playing 4 an hour, say, one every quarter hour, then for one week, whenever "this" song plays, fifteen minutes later "that" song plays. Heavy listeners, office workers might start to notice the "predictability" of it if you leave the card stack in the same order for a long time. so, you shuffle and then next week when "this" song plays, fifteen minutes later "some other" one plays, not the same as last week.
shuffle on weekends because the next pass thru a category after a shuffle is always going to be screwy, because the card stack has changed. you're going to run into some 'same song previous day' rules, mostly. I just turn that rule off for the next schedule after i do a shuffle and let it fly. since listening patterns on weekends are so different from week days, if you get the very same song at 9am on Saturday that you got at 9am on Friday, there's a whole different group of listeners, so it's not as concerning as it would be if you get the very same song at 9am on Monday and again at 9am on Tuesday.
to turn off the rule, as soon as you load a schedule go to the Rules>Enforcement menu and remove the check from the Song Previous Day box. Music 1 won't observe any rule that does not have a check in the box next to it. When you turn it off, if you just click OK, it'll not observe that rule for this one schedule. It'll be on again when you load the next one. If you turn it off and click the "Save As Default" button, the rule will stay off for all future schedules until such time as you turn it on again.