Regarding the wired bolts it was common practice in a railway workshop I was working for. Two adjacent bolts were wired together and the wire was tightened by twisting them around in between the two bolt heads in a manner similar to using a turnbuckle. It would prevent bolts working themselves...
Below is a link to the "Dry Lake Racers Australia" DLRA track layout for Lake Gairdner in South Australia. 3 miles to speed up with 3 miles timed and 3 miles to slow down should be enough room.
DLRA Track Layout
Has anyone been to Bonneville?