I suppose the trick is to find one in an obscure location that is not clearly visible or heavily trafficed. Areas like in a small park , or just out of the city would be ideal.
Your right about the modern city layout of Toronto. Ther is the same problem in every small subdivision town thats popping up around the city. All of the hand rails are extremely course and galvenized to prevent corrosion and make them last longer. If it isnt galvenized steel, then its aluminum, which is a rather deadly surface to slide on.
Barrie is an older city than toronto (not literally, but it hasnt been updated the same way that toronto has over the years). Barrie has a ton of ideal rails, but none that are that large or impressive for photo shoots and such. But if your looking for something fun to mess around on, thats probably the best place to look. A 30 minute drive wil turn up about 6 or 7 hittable rails.
Anyway, if anyone finds that perfect rail in southern ontario, let me know, or else!
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Mike La Anyane
www.mikelaphotography.com