You can go today to places and for activities here leave as early as possible, the first batch of scuba diving at the sindhudurg fort starts at 8:00 am followed by other activities.
Other activities can include:
5 activities like parasailing, bumper ride, banana ride, sofa ride and jet skiing
This may cost you somewhere around 1500-1700.
After these activities you can visit the sindhudurg fort.
Take lunch at the beach
And take the rest day for relaxation.
Watch amazing sunsets and enjoy at the beaches.