A couple of things..
First a maintenance free battery will greatly improve your starting, plus you don't have to take the seat off every week to check the battery levels and you don't have to worry about acid spills or the vent tube coming off.
This has helped with a lot of the hot start problems.
If it is a cold start problem, normal starting with a cold bike is full to partial choke, no throttle. Hot start is no choke and just a blip of the throttle.
BTW, I usually start my bike in neutral, that way I don't have to worry about it going anywhere until I am ready to.
If neither of those seem to do the trick it may be a "flat spot" on the starter. Try putting the bike in gear and rocking it hard forward and back til it hits the stopping point and try the start again. If this starts the bike then it points to a starter. A good cleaning of the insides (of the starter) may solve the problem. The starter hanghs down there at the bottom of the bike and gathers a lot of road crud. Some of this does seem to eventually work it's way inside.
Patriot Guard Rider
2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
VROC # 11628 / 25000-H
ARVROC # 12 Coordinator and Crowd Control
OKVROC # 18 (H)
TNVROC # 45 (H)