Russell French, acknowledged by most to be a top class target and clout
longbow
archer regularly holds his bow for at least five seconds, and often more. I would certainly not recommend this, but it works for him and since he makes his own bows I imagine he accepts the risk of bow failure. Two seconds between full draw and release should be adequate for accurate sighting.
Drawing and releasing a heavy EWBS bow requires a different technique. The 'slashing loose' is appropriate here and given that full draw is achieved that is how distance is obtained.