For Flex Hose I don't think that they are laterally stiff enough to apply pressure thrust. I believe they will deflect laterally (squirm) before they are able to apply large forces to nozzles. From ones I have seen installed on tanks for settlement the slack in the hose sags down until the brading on the bottom is in full tension. In my limited field experience I have never seen a hose push itself out straight the ones I have observed have alawys deflected laterally.