Thanks Itamar. I think I am going to set up something like that for the next iteration of this course as I don;t have time to work it out at the moment being a bit of a novice.
I think something like you have mentioned plus also adding in a pass / fail scale so that just "Pass" or "Fail" appears in the gradebook would be the best way to go.
Need to do some reading firts though!
THanks again,
Richard