AH back at you,
That is why the beginning of the outback filter is so narrow with a step up, this is the low penality, high skills part of the feature.
"A filter at the gateway to an expert area should mimic the most difficult feature encountered on the expert trail" As expert trails are not required to have any by pass and no easyier way. Expert features can be of any size, height and tread width, The begining of any FEATURE( not filter) should have a low penality, high skill entrance thus allowing the oppertunity for less skilled riders a chance for failure without penility. Whistler. We have as a guideline, built filters into our features including the gateway filter.
Thanks
TTF Steward.