26 The reference to the "cone of vision" above picks up the cone of vision referred to in the Design Elements (at 77) dealing with both horizontal and vertical components, and in the "Acceptable Development" criteria set out above. During the course of the hearing, the Tribunal attempted, unsuccessfully, to have the parties produce material, agreed between the parties as far as possible, setting out various horizontal cones of vision (at least) with respect to the overlooking of Mr Auguste's property. This occurred when the respondent produced, only at the hearing and only for the purposes of cross-examination, its own attempt at a cone of vision diagram. Such a course (that is, late production without notice) is completely unsatisfactory, and has contributed to the result that the Tribunal is left without any really suitable evidence on this point.
27 Nevertheless, both parties urged the Tribunal to "do the best it [could]" with the disputed material. Such exhortations hardly assist the Tribunal in reaching the correct and preferable decision in the matter based upon proper material. It cannot be beyond the ability of the experts in this matter to reach a more or less agreed position, and if not, to demonstrate precisely why that is not possible with reference to proper models and assumptions.
28 In part, because some significant overlooking is effectively conceded by the applicant, in respect of which he has taken noteworthy steps to ameliorate the problem, and in part, because we are dealing with a more generalised performance criteria, it is unnecessary to finally resolve how a cone of vision is to be applied in respect of this particular development. In any event, as is demonstrated by a recent decision of this Tribunal, the cone of vision requirements of the R-Codes are perhaps inherently problematic as they attempt to be "an objective measure for the subjective issue of views and privacy" and contain statements that "are not always consistent": Newman and Town of Cottesloe [2005] WASAT 83 at [38] and [48]. On review, see Newman and Town of Cottesloe [2005] WASAT 154.