F11/10 Tring course:
Advantages
Fast DC, nice surface, massive hill down that runs into a cutting so you hold your speed
Disadvantages:
First turn is very long and slow (and has an annoying late line of sight onto the r/b), course can be susceptible to adverse wind with a tough finish, two turns
I've ridden the F11 and F20 both >5 times and my top 3/4 times are all on the F20 (inc one ride post chippings)
F11/10 Tring course:
Advantages
Fast DC, nice surface, massive hill down that runs into a cutting so you hold your speed
Disadvantages:
First turn is very long and slow (and has an annoying late line of sight onto the r/b), course can be susceptible to adverse wind with a tough finish, two turns
I've ridden the F11 and F20 both >5 times and my top 3/4 times are all on the F20 (inc one ride post chippings)