Trail Saddle Horn

I am taking roping lessons, I know I asked a ton of questions already, but here we go:

The only western saddle I own is a trail saddle- heavy and good leather, but it has a normal sized horn. I think the top may be bigger,but that is it. It was $700 with no silver, so it is not that cheap of a saddle.
My instructor thinks it will be ok for pulling the dummy around (~60lbs) but would probably break for an actual steer.

My question is, anyone rope with a normal western saddle? I do plan on putting rubber around it to protect the leather, which may add some support as well- but do you think it would break if it had to hold a cow? Any way around it? Tips?

Thanks in advance.

ps- we do have a breast collar as well, but no flank/back cinch if that makes a difference