It's "without due care and attention" - anyway, sorry mate, I have a lot of motorcycling experience and this is a good example of driving WDCAA. The best thing is to plead guilty asap and take the rap. Oddly enough this is just the sort of thing that is covered very well in suplimentary motorcycle training. The basics being that if you can't see, ie blind summit, then approach with caution, especially when the sun is in front and low in the sky. You should have been approaching that summit knowing 2 things a) the sun is in front and b) that you cannot see past the summit, 30mph max and you'd not have hit them.