Well Lee it depends on the size of the logs, if they are about 25cm tall then you just stand in 1st or 2nd gear and they are easy to go over. Bigger than that then you also approach standing and in 1st or 2nd gear but when getting close to the log (about 1.5m or less) you pull on the handlebars, lean back and push the throttle to do a small wheelie to help the front tires bump the log and have the front tires to bump up on the log and not have the whole quad bump back. Once the front tires have cleared then you can do one of two things: 1. once the log is around mid-quad then feather the clutch so the front end comes down, lean forward, push the handlebars down to help the quad slide on the log and apply some throttle to make sure the rear tires push you through and not just get stuck or 2. since the front is still in the air then accelerate while standing and when the rear tires hit the log you blip the throttle so the front does not go down so violently and you will jump the log (like Andre on the pic above). Hope it makes sense, it's pretty difficult to explain but did my best! Find some logs and practice, practice, practice, remember the logs have to be secured down.