FH1100 in a 500 if cruising at 120 kts and you shut the throttle you darent bottom the lever as you will have the haed off the machine. I teach people to put the lever down about 2/3 and maintain quite a lot of progressive rear cylic maintaining until you get airspeed to 80 or 60 kts depending on what range you are after. You can then lower the lever gently to the bottom with more rear cylic as you get to 60 kts. This technique will give you an initial rate of descent of 500fpm for about 10 seconds rising up to 2000 ft a min at 60 kts lever fully down. From 1000 ft in 15 kts of wind you will get nearly a km range