"Ramp top capacity 700 lb."
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1500 lb. load capacity (750 lbs. per ramp)
The
instructions for this one clearly imply it was designed for an ATV, with most of your weight and the bikes weight on the center ramp it doesn't look good to me.
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These two look very iffy because of the weight restrictions, assuming that you are riding the bike up under power and that you weight at least 150lbs. then you need about 820lb capacity minimum to be right at it's limits. Personally I think you need a little cushion like 1500lb capacity for long term usage. However, I have absolutely no experience other than pushing dirt bikes up a 2X6 plank like was mentioned earlier.
I can't believe that YouTube Guy was doing that in sandals.