JMO but the absolute best way to secure any dual axle trailer is to use a set of adjustable
BAL Dual Axle Chocks, chocking both the low side and high side tires, regardless of what those tires are sitting on.
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Unfortunately my current rig has an especially narrow axle spread that doesn't offer sufficient space between the tires to fit the BAL Chocks so I now use rubber chocks secured in position with hardwood spacers ... same principle, just not quite as convenient.
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Using BAL X-Chocks, or
any in-between tire chock that isn't sitting on a hard, flat surface is the worst thing you could do since tires shrink as they cool and X-Chocks that were initially snug will loosen to the point where they can even fall out of position. Norco even includes this warning note in every box of X-Chocks, not to rely on their product to actually secure the trailer, or as it's phrased not to use the X-Chock as a "parking brake".
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Instead, I use my X-Chocks for the purpose for which they were designed - to minimize camper "wiggle" caused by the wheels rotating on their axis, and for that they do help a lot. :B