G'day Mart
Drift alignment is not too difficult after you get the hang of it. It's best to start with the scope aligned as closely to the SCP as possible then you will only have to make minor adjustments. There is a good article in the articles and projects section of this site (link below). Software as Luka mentioned can also be very useful for this purpose and there are a number of options available.
http://www.iceinspace.com.au/63-405-0-0-1-0.html
Mark