I've tried both settings. Neither true or false made any difference. I get the same results with and without the addon. The only difference is that with the addon, the crate drops in random locations (frequently in water, despite that setting being toggled) rather than specifically at monuments, if it drops at all.

To be fair, I don't recall it whether or not it altered the oilrig scripts. As is, I just went back to vanilla. :shrug:

When the timer is enabled today I got this error

[8/13/2019 8:59:12 AM] Failed to run a 2661.00 timer in 'ChinookDropRandomizer v1.3.0' (NullReferenceException: )
  at (wrapper managed-to-native) UnityEngine.Component.get_transform(UnityEngine.Component)
  at CH47HelicopterAIController.DropCrate () [0x0000a] in <d59ae112ba9e47118fc088f2d8b8c39e>:0 
  at Oxide.Plugins.ChinookDropRandomizer+<TryDropCrate>c__AnonStorey0.<>m__0 () [0x000cf] in <751c1888d50145f589d0ec1a5f9508e2>:0 
  at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <4452f821def6406d834e4149849fe7ea>:0 ​

The new version should fix it.