don't know about 300/500 but NG has very nice VNAV descend function, just enter the winds on the desc forecast page for levels 300/200/100 if significant, usually does the trick. if there will be tail wind during descend, put in about 20% more wind speed.
after all its usually 21 or 22 minutes from T/D to DEST. if you get above path and have to perform a high speed descend go below the virtual vnav-path, 300 feet for every 10 knots above the econ-desc-speed that the path is based on, so if for example 300 is econ desc and you dive with 330, go 900 below the path, reduce to 300 to get back to econ profile.
if you are lets say 15-25 NM final and still slightly high you may also go for flaps 1/2/5 keeping the speed at around 210/220. that creates way more drag and you are already configured and slow.