How to ride over logs:
As you approach the log, you should be in low gear,terrified, and standing up and teetering weak-kneed on the pegs.
A few milliseconds before you reach the log, roll your eyes up in your head (because you don’t really want to look), twist the throttle and pray the front wheel lifts.
Once the front end has pierced the log with a thunderous impact, and the rear wheel is about to shoot through in the breech as well,
shut the throttle and begin flapping your arms and legs. If you have done everything properly, you will well and truly launch yourself into a magnificent flying W, the trajectory of which will carry you well clear of the log and motorcycle.
Keep your eyes retracted in your head; if you look you will only tense up your body and land with the force of a mortar shell.
Taken from “Cycle” Oct 1977 and can be found on this AMTRA site in ABOUT US – HISTORY. Well worth a read. I have always used this wise advise for my log crossings. I can teach you this skill at an AMTRA training day. I also do river crossings and triple jumps with the same skill. Please bring spare bikes and you should have ambulance cover.