Protecting my Investor list -When showing a co-wholesaler's property

[Karl Smith]

How can wholesaler protect their investor/buyer list when showing a co-wholesaler's property. For example: the property has no lock box or when the wholesaler who has control is required to be present at showing. Is there a way to ensure that the other person does not try to take future deals directly to your investors circumventing you in the process.

Is there way to prevent this when you wholesale when virtual wholesaling in other markets.

Karl