Your Tarkarli trip itinerary sounds exciting! For watersports, Tarkarli offers activities like scuba diving, snorkeling, and parasailing. You can stay at beach resorts or homestays for a relaxed experience. Exploring Sindhudurg Fort on the 29th is a great way to wrap up the trip. You can hire a taxi or take a bus for smooth travel. To connect with others for the trip, you can check local travel forums or group platforms like Meetup for potential travel companions.