Brings back fond memories of my youth!
Did you go up to the Rohtang Pass and into Lahaul? The hot springs at Vashist? And there is an interesting way to go from Manali to the Parvati Valley on foot via Nagar and Malana.
We were not allowed to go past Manikaran to the Khirganga back then. It was a military restricted zone, as was Ladakh. I guess India is getting along better with China now and they are less worried about us foreigners spying on their border areas ;-)
Yup i stayed briefly in Vashisht, there's a great guest house on the side of the valley with a nice view,
I never made it to Malana which actually has the best charas I hear!