Builder,
In case you are not aware, there is a Glue feature in SU.
If a selection is giving me problems while trying to move it, I'll right click on it to see if "UNGLUE" is available in the context menu. If so, then I'll do an Unglue.
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Moving or drawing geometry across large distances can be tedious. A method I often forget to practice, but which is very helpful, is to zoom into the "target point", then Zoom to Extents, then zoom to your "start" point, select your geometry or intiate a drawing tool, then utilize the "Zoom Next" and "Zoom Previous" functions available in the Camera Toolbar.