I am the same with being left eye but right handed, have you tried the easy hit beads? I have found they really help and allow you to keep both eyes open too.
Ive never tried them mate, they look awesome, just what I need...THANKYOU +1Bullx glad your on your way to being a happy shooter... theres not much more frustrating than blasting away and hitting nowt haha
The easy hit ones are quite expensive, I am pretty sure there are other makes that do the same but a bit cheaper. But I have only used the easy hit ones so you might have to do some research.