Now my biggest problem is having no d rings on the back of my saddle. (Does anyone know if this can be done by a saddler?)
So i have always had them on the front. I currently have a stowaway, designed for hoof boots but room for bits and pieces. I also had a drinks bottle, but did away with this idea, it got on my nerves more than the cob.
What concerns me about too much weight on the front is the effect of tipping the saddle forwards. This may not happen with treed. But it does cross my mine being treeless.
Your other option is a saddle pad with pockets built in. This allows you to carry minimum items and have less bulk on the horse.
This is size of stowaway