You can join our groups as a solo traveler. In every 2 months we go to Himachal pradesh with 30 to 40 solo travellers. You can check our trip here: http://happyjourney.co.in/tour/tour_detail/37
Yes, It's possible. Every month we gather solo travellers and go to Manali adventure trip. We are going in March(1st to 10th), right now only few seats left. Click here to see full Itinerary--> http://happyjourney.co.in/tour/tour_detail/47