Both my streetrunner and grassrunner use a slight toe out. Seems to slow the steering input-which helps prevent over-correcting at speed better than using dual rate.
Falling short of recommending it though. Still a work in progress with me. Previous to beginning speed running have always run...
Linkage setting called for in the owner/operator manual are generally close to what works most of the time in most of the places. If nothing else, it's a good starting point.
Which brings up a point of interest. Having the linkage adjust properly prior to setting toe is helpful. Toe can be...