i use cheeep flyrods (eagle claw mostly) i use 8,9,10,and 11 WT DT-F on these rods.
the heavy line really loads up the 6.5 and 7 foot rods and gives great line speed.
i fish chicot lake and it has a lot of timber ,so you have to roll cast,no double hauls there.
i haven't had a problem spooking fish with the heavy line ,of course chinks and gills are not trout.