I do it the other way. A line from the stern AROUND something aft on shore and back to the stern. Power in reverse and when the bow swings out let loose ONE end of the line and hope it runs free from around the shore obstacle and back to you. No moving required by you. If you must use the bow try securing the line at the bow, run it to shore around something and back to the bow where it passes thru a snap shackle and back to the cockpit. Power forward, swing the stern out, power in reverse as you let the line run out. Again you must take care that it will run free. Once you're off the dock and the line has run go forward and retrieve. OR if you have a really long line run it from the cockpit forward to the bow, thru a snap shackle, to shore around something, back to the bow thru a second snap shackle and back to the cockpit. Now you don't have to leave the cockpit to retrieve the line.
randy cape dory 25d Seraph