At 2000 feet, you can scoot under the CLL 2000 ft step. Over Freo golf course at 1500, maintain till just after freo harbour, then 2000 feet, you maintain your glide distance to land at 2k in a single. Or you could just file a flight plan and go CTA.
If you're within glide range to land, while going over water, then you dont need to wear your jackets, but you must have them on board