HELP! Fuel problem

Going to track event at Pocono this weekend without my support crew and just found out there is no 100 octane gas available at track or anywhere near. I have always used 100 octane for 360 CH, but can I use pump gas?

Engine is same as stock 360, same compression (11:1). Will I get detonation with 93-94 octane because I run close to redline (hot engine)?

I assume the ECU will retard timing to compensate, but then I lose power.

Any solutions? I'd hate to bring my road car and spend 2 hours putting on racing tape. Anyone run a 360 CH on 93-94 octane? Thanks