Example: If your dinghy width is 60" then divide by 2 + 4" = 34". Swim platform is 32". By adding 2" to the platform this would make it equal to the dinghy width of 34" so then you would have chosen the 6" model.
Hint: 4 inches of the deck mount must be used to secure to the platform.
If you have a lip on the outer edge of your platform, let us know how high it is and we will ship you free shims with your purchase.
If your having problems determining the right mount, give us a hail at
1.906. 553.6249
or fillout our on-line Davit Work Sheet