trialer
 

Whats the best trailer for your kayak,
.looking for something to take it from the car to the beach?

What you are referring to is a "cart". If you'll be crossing over soft sand you'd be best off with one that has big pneumatic "ballon" tires. I get by fine with a cart with the more standard pneumatic "heavy duty" tires, because the only places I launch from are fairly hard pack.