Most Fork guides I know don't talk about catching slots, they talk about catching overs.
Overs are pretty rare, even the guides might only get a couple a week sight fishing or prime times, other slow times there might be weeks between overs. Also keep in mind most overs are in the 7-9 pound range, only a minority % goes DD, just look at tourney results. If a guide catches an over, a DD, or a 2.5 pound under then you WILL hear about it because they will say so. 90% of your guide pictures are those large slots in 5-8 pound range where no weight is listed.