Hi, I live on a pretty big and very deep lake! New to OW scuba diving and technical freediving. Doesn't appear to be many in my area for freediving but do have some family with moderate interest. Not that diving alone is condoned and it is advised to dive close with someone of similar or better skill, what are some conservative precautions to take to ensure safety is maintained with minimal supervision? Please reference other threads too! Curious topic, has anyone explored automatic retrieval systems based on time or depth of a dive? What is good gear to have at hand when returning to the surface to aid in resting/recovering? I'm not a real depth seeker but more time under the water is more fun!