Improved Trip says that if you succeed in tripping you get an attack.
If I'm using Two-Weapon Fighting for a whip/short sword combo.. I get an attack after I trip you according to the Improved Trip feat.
Then, I get my off-hand (short sword) attack due to my TWF feat.
Is my "free" attack from tripping lost? Do I have to use the whip for it? Can I use my short sword for my "free" attack?
So, it would like this:
Whip-Trip, Short sword attack, then offhand short sword attack.
Also, correct me if I'm wrong but you don't get sneak attack damage on a prone character correct?