pm replied to Paul, to get to the windsock turn left over the connel bridge and through the small housing estate and you will see the sock next to the airport runway
the priory you will pass if you head for the quarry....would reccomend you get an ordanance survey map as it will give you an idea on these marks......one final thing to bear in mind is that the road just after tarbet ( loch lomond ) is closed every night from 10pm till 6 am for repairs, just incase thats the way your heading up to oban