I'm a great believer in having 2 or 3 polar alignment techniques up your sleeve Alex. Would suggest:
1. Figure out how to drift align in software with tracking RA but none in DEC (Phd would allow this I believe - I use Maxim normally)
2. Have a go with the demo of alignmaster as others have suggested.
Personally I found drift aligning with a reticle far harder than a webcam - you have to wait quite a while to get a definitive signal. What Dave says is important too. You either have to rotate you cam to get its axis aligned with your RA/Dec axes OR do an alignment in software (like PhD) before drifting so the software already "knows" which directors are RA and Dec.
If its all getting too hard next best plan might be to find a kindred IIS spirit near your location.....
