This type is not indecisive, but is playing a power game. He (or she) deliberately suggests preparing yet another report on a project because he wants to delay it from proceeding without it looking as if he is the one holding it up. He can maintain his innocent stance while achieving his obstructive objective.
Some government bodies may use this approach so as not to upset their electorate. It looks like they are taking action on a contentious issue while not actually proceeding with the project itself. Perhaps by the time the report is published, which can seem to take a long time, the issue will have become less contentious or even forgotten, or circumstances may have changed to make the project either viable or redundant. In the meantime, the project is not up for further discussion.
So how can you handle the Report Commissioner type successfully so that he cooperates with you and your goal is achieved?
Your response to the Report Commissioner depends on the level of power and authority you have in the situation. Where the Report Commissioner holds all the power such as where government bodies are involved, you need to determine whether their action is a genuine need for the information that the report will deliver before a decision can be made or whether it is a way of saying no.
If it is the latter, you need to accept that as being the fact, and not wait for the report to be published before deciding on your next step. You are not accepting their implied refusal as a defeat, but as an indicator that you need to start adopting a different strategy to influence them to your point of view. You need to be creative in finding a way of demonstrating your logical argument to them, which does not resort to emotional tactics.
(Think of a child asking his mother for something he wants, and she says ‘I will ask your father when he gets home.’ Is she actually saying no but wants to avoid telling her child? Maybe she hopes he will have forgotten about what he wanted by the time the father gets home. Children are very creative in finding ways of successfully demonstrating why they must have what they want.)
Where your level of power and authority is more equal with that of the Report Commissioner, your aim must be to not make an issue about your way being the best way. If you make an issue, he is more likely to obstruct your progress by asking for a further report. Instead you must demonstrate faultless logic for your proposition, and do it in such a way that he can take the credit for it.
Where you hold the power and authority over someone who deliberately obstructs progress by commissioning various reports, you must give him (or her) a very clearly understood deadline with a clear consequence of missing that deadline for any reason.