Real side handles make necessary tie-down points for transport, and are well worth the cost of adding them if your boat doesn't have them. This is a good model that uses two screws at each end to secure it. Even better, if you can reach inside the hull, use bolts and washers instead of screws. Kayak plastic is pretty thick though, and the screws have not been a problem.
This is for sit-on-top kayaks with closed hulls. Open-hull sit-inside kayaks don't really need hatches.
You can order any kind and size of hatch on eBay. They are easy to install - just trace the hole on the hull and cut it out with a jigsaw. A hatch like this one has a storage bag for small items like keys and phone, which removes for access to the inside of the hull.
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