For small boats a 24 volt system often won't fit due to space and weight issues, nor is it necessary to have for a lightweight boat. I've had several systems on <16' boats and never did I feel the need for a 24 volt system.
Humminbird helix ice 5G2 ice flasher. 350$
https://www.humminbird.com/Products/ICE-HELIX-5-CHIRP-GPS-G2/
Clam kenai single man flipover- 225$
Items will be available 2/24