Originally Posted by AfleetAlex
I don't think my trainer would let me use a crop on her mare. It's not the mare's fault that I somehow have no lower body strength to kick properly. It's so weird that I can't kick. It feels like my legs weigh a lot and I can't pick them up when I'm riding.
My point is that you shouldn't need to. You don't actually kick the horse - leg aids should never be that violent.
And to be brutally honest if your trainer's horse was less lazy, then you shouldn't have to use a crop. Plus I would be worried if your trainer doesn't like you to reinforce leg aids with a whip - surely if she is instructing she should know that this is what is needed.
I would talk to your trainer about it, mention that someone had suggested a crop, and see what she says. You don't use it to beat the horse at all, or even to hit it. All you do is ask with the leg, ask with the leg, demand with the leg, then ask with the leg and the crop.