Here is my setup, i only use wave gear so the bed is enclosed at other end except far right has a hole to allow masts to slide through and can fit up to a 5.7 under it, the bed is a queen size but about 1 foot shorter, i have room in front of the bed about the length of the sliding door as i wanted room for mountain bikes etc. and i'm not real tall, so the bed is perfect, all my wetsuits, harnesses etc. are under the left side in tubs. boards are stapped to the roof and side wall with quick release straps like on back packs etc. will stop them sliding foward if you hit the brakes too hard..
Usually just slide boards on the bed if i'm going local but can take 3 boards , 4 or 5 sails, 2 booms, masts and camping gear, and still have full bed if i'm traveling, and full floor space in front for esky.
Best bit i can sit up in bed with out hitting boards..