I run a courtesy patrol service called Signal 88 security- Boise and I am a Multi-family Security Expert. Each property will have its own unique needs and situations. Pools and Hot Tubs can be highly problematic in the summer because of trespassing and issues that can occur once the manager has left for the evening. Having a camera to record events can be very nice especially when you get calls at home regarding late night pool issues. In most newer systems you have the ability to view the cameras from a smart phone, Ipad or your home computer. This can help you as a manager avoid walking into a bad situation if you are the person responsible for after hours response.
A courtesy patrol might be a good idea as well. You can't be everywhere and having some eyes on the property after-hours can be a huge help. Also having a third party response to noise issues helps provide the management with a added level of transparency if they ever have to issue a lease violation or appear in court for an eviction that results from documents lease violations. Not all patrol services are equal, an you get what you pay for in many instances. I would suggest checking references, local and state licensing, Insurance coverage levels and ask to see their patrol cars? If thy look like a low budget operation they probably can't be trusted to protect your property effectively.
While this type of service can seem like an expense, it can actually improve your bottom lines. My clients found that their occupancy near the pool area's improved and had much less turnover. Also female renters like having this type of service because security is a higher concern for them. Having someone that can respond quickly to a noise issue will also raise the satisfaction level of tenants and having a third party verify lease violations allows a manager to charge for those violations with fewer disputes.
Using good contracts will help you to keep your property safe. The Crime Free Lease Addendum has held up in court around the country and might be a good addition to your lease agreement.
www.crime-free-association.org/lease_addendums_az_english.htm
Each property is different and this isn't legal advice. I do hope this helps you keep your properties safe and secure.