Wheel Ezz Cart

My new cart has arrived from Campmore. It has adjustible flanges to control the depth that the arms go into the scuppers. It also has a removable pin attached by a bungee that seals(?) one arm. What I would like to know is:

a. What depth to allow the arms to go into the scuppers,
b. What is the pin for?

The flanges arrived set to limit insertion to 4" which raises the hull a lot and makes for a large moment arm to destroy the scuppers. My old Hobie cart allowed the hull to rest on the cross bar/axle. What don't I know that I should (about the cart )? I'll take care of the rest elsewhere/elsewhen!

Thanks,

Val

Val,
What's important is that the cart posts extend all the way through the scupper and out above the deck. This ensures the strongest parts of the scupper, the top and bottom, take all the forces of the cart and not the weaker scupper tube.
The pin at the top is the keeper pin designed to ensure the cart posts don't slip down and damage the scupper tube when underway. It also holds the cart in place on the kayak making unloading from a roofrack/trailer easier.
Set the cart collars (flanges/bushings) so that there is enough clearance through the hull that the keeper pin can be inserted horizontally through the lower hole in the cart post and that the hull bottom does not hit the crossbar (prevents hull oil canning).
Roadrunners reply in this post will help:
viewtopic.php?f=11&t=14028
A search for carts and balls will yield other useful info.

Many thanks Stingray, you "old salt"!
Val