http://nova.astrometry.net/upload is my favourite option. I find it's quicker than Astrotortilla, which can be time-consuming to configure and download index files. You can get accurate results uploading a jpg or a Binx4 (this saves time when uploading).
Once I get a solve, I make offset RA/Dec corrections to my mount to get to the target. It usually takes a few iterations to get it spot on.
Sam