How fast should the throw be in front toss? Wasn't sure if I should try to be a flame thrower (as much as I could try to be) or just a medium throw?
Hard, flat and it should cross the plate somewhere slightly below the same speed at the division the team is playing in (not as fast since you are throwing closer than the pitching rubber so you want the reaction time to be about the same).
Most front toss is intended to be more like BP, so throw lots of strikes. Throw a weird one every now and then to keep them on their toes.