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I don't think the lack of tracking is a barrier to showing the views to others. You just watch which way the object drifts in the field and then place the object towards the edge so it will drift into the centre before letting them look. For magnifications up to about 100 this should be fine. And even at higher mags, if it's a bright object you can keep it centred by looking through the finder (probably has to be a right-angle finder) while the other person looks through the main scope.
I have a goto/tracking Dob and the tracking is great for keeping an object in the field for many minutes at a time. But at public viewings the tracking is almost useless at keeping the object in the field. This is because at least 50% of people will put their hand on the scope or push against it with their eye so that it moves off target. So I am constantly looking through the right-angle finder and making manual adjustments. Sometimes I don't even use the tracking at such events because it's extra work to set it up and gives minimal benefit.
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