Long walk? Wide board? Short arm?   
You Need Extra Reach.

Board Buddy is a great way to carry your surfboard to the beach. This simple and easy-to-use surfboard carrier gives you a firm grip on your board. Made of tough, durable ABS plastic, Board Buddy slides right onto the rail of your board when you're headed for the surf.  It's a surfboard carrying device for a longboard or shortboard. Taking a shortboard and a longboard to the beach? Board Buddy makes carrying two boards easy.