Have done this hike a few times. Parking can be a challenge, as it’s street parking. The entrance is well marked, and the onset is up a dirt hill which can be tricky when wet. It opens up to an amazing view of Lani Kai and the bay, and from there you follow the exposed ridge to the pill boxes. Some steep area with poor footing, with loose first and rocks. This first part is often crowded, and then end point for many folks. You can continue on through brush and tress, partly covered, but exposed areas continue with amazing views of Kailua, Waimānalo, and the Ko’olaus. The descent to Kano Kai Drive is via a gulley and requires careful navigation, due to loose rocks. There are branches to use to hold onto.