To determine which mount system will work best for you, measure the beam of your dingy, divide by 2 and add 4 inches.

Now measure your platform (Transom to the end). You must add the number below to your platform length figure, in order to determine which mount to use.

The platform figure must be equal or greater than half the width of your dingy figure.

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Example:
If your dingy width is 60" - divide by 2 + 4" = 34"
Swim platform is 32". By adding 2" to the platform this would make it equal to the dingy width of 34".

So you would then chose the 8" Xtension model