Ah! The luxury of always using balanced field. When I was a lad we had Vgo and Vstop. If you were lucky the former came before the latter; if the other way round it was called "The area of service risk". In this case you just made sure that the TOR was no more than 90% of TORA. On a calm day at Masirah or Gan the temperature above the black runway was inevitably much more than in the met man's little gizmo with predictable results. When I was a copilot we once used a bit of desert beyond the end of the El Adem runway even though I had done my sums and expressed strong doubts (Pre CRM of course). Thank heaven for large, low pressure tires. When Mk1 Victor Tankers took off from such airfields it seemed as though most of the station personnel would gather at the far end to watch the fun.