I have sherman pocket. Here are some pictures with my tripod in one side pocket and spotting scope in the other. There are two attachment points one set is at the bottom of the bag and the other about a third of the way up.
Bottom attachment points:
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I use the lower attachment points and the upper straps go around the side pocket. If I need in my side pockets I just unzip the top and pull out what I need (usually spotting scope or tripod).
Upper attachement points:
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I've only set it up this way for pictures but haven't needed to use it this way in the field. This way the upper straps can be connected to the top of the frame and are above the side pockets.