Set the Link Attributes of the column you're using for the link (or the Link definition itself) to:
On Page 0 / Global Page add a Dynamic Action that fires on "Double Click" on the jQuery Selector "tr.clickable". Note: This class was set using an After Refresh Dynamic Action, see the previous blogpost. You can also accomplish that without the Current Record Indicator, but you have to assign the class "clickable" to the TR - you can do that with just the "editlink" class as a selector.
// Execute a click on the element that is used as anchor
apex.event.trigger( $(this.triggeringElement).find("a.editlink").children(":nth-child(1)") , "click");
This simulates a click on the anchor with the "editlink" class. And now your user can just open the Form with a double click somewhere in a row of the report.