Count time you can actually use
Write down departure, expected arrival, the return journey and the time you need to be home. Add breaks and a margin for delays. What remains is the time available at the coast.
If that window is too small for the activity you care about, consider staying overnight or choosing a closer beach.
Compare complete costs
An overnight stay adds accommodation and meals but may reduce the pressure to travel back immediately. Compare those costs with your actual transport quotes. Don't assume either option is automatically cheaper.
Check whether your activity needs an early start or might move because of conditions. A second morning can create useful flexibility.
Choose the plan you can enjoy
For a Busua visit, for example, a traveller already on the western coast has a different decision from someone starting far away. Use your real starting point.
If you stay, keep checkout day light and confirm luggage arrangements. If you return the same day, drop optional stops rather than compressing the main activity into a rushed hour.
Rules, fees and opening hours change. Confirm anything that matters before you rely on it.