It would depend if the limiting obstacle was a tower on the edge of the splay, or a ridgeline running across the take-off path. The first you could see & avoid, the second you just watch getting bigger!
Mt company requires that the obstacles be taken into account for all take-offs, yet special procedures may be discontinued in VFR once the Captain is assured of obstacle clearance. When that assurance is reached depends upon the type of obstacle, as above, and provides for some interesting VFR take-off safety briefs.
[This message has been edited by Checkboard (edited 06 April 2001).]