Got pushed into the hedge yesterday and managed to do a little damage to the plastic trim on the nearside mirror. How can this be avoided apart from standing my ground more? Are there any products that offer protection beyond replacement?

Got any pictures?

I'll try get some tomorrow.

have you thought about Wrapping your mirrors?

can get vinyl warps cheaps nowadays, and only take like 10-20 minutes to put on(if you know what you doing and have right tools)  and can make you wing mirrors look like they made from carbon fibre, or you can get clear vinyl  both will help protect your mirrors 

Vinyl is where I'm thinking of going but no internet search binding brings up anything. Assuming at least a generic curved piece is used? Might look into someone local.