Like I say in the Enyo videos a orbit works better at avoiding getting scrammed than keep-at. However it’s not guaranteed.
You need to watch for people trying to bounce you and be able to adjust your orbit distance based on their actions. Often times watching their ship by hitting the “Loot At” button can tell you what their are doing.
MWDs don’t overload for long but if you see the need, you can overload for a few cycles early in the fight to give you self some extra speed.