Product review (5 stars): Have not used yet (Iowa winter) but the kit contents & "dry run" looks to hold promise for doinga good job.
I am giving this 5 Stars at the moment - we have not used it yet because we are currently in Iowa winter.  The current rating is solely based upon what the set contains and how it goes together very nicely.  It "looks" like it will do the job very well and will be checked out this spring or summer.  If it does not work as described, I will revise this review accordingly.