1. General - as I said above, the weekender is a lot easier to build with all flat surfaces. No bending of wood or complicated hatch construction. The beveled ends allow you to add a foot or more on each end without having to extend the trailer frame or floor. My cabin is 5X10 and the extra space really comes in handy.
2. Trailer - if you have read my posts, you know that I am a big fan of the Northern Tool 5X8 channel frame trailer. For the money, you can't beat the value of this trailer and mine has proven to be very strong and reliable. The only change I made to mine was upgrading wheels and tires (see below).
3. Weight - I am an engineer by trade so I tend to overbuild and add lots of safety factor. With its higher GVW (nearly 2,000 lbs), the NT trailer was perfect for my heavier build with 3/4" plywood sidewalls, 1/4" skins, and heavier framing throughout. I'm just not a foamy fan.
4. Hatch - you will notice in the pictures below that I used a two piece hatch (I call the bottom piece a tailgate). This makes for a very light hatch that only needs a very basic support system. It was also very easy to seal and is absolutely watertight. It allows easier access to the counter space and cabinets. The only downside is that the ice chests, camp stove, and other gear is stored under the two piece counter and must be removed when camping. Most of these items are left out while camping except anything containing food which gets stored in the TV at night.
5. Doors - manufactured doors really look good on the weekender although I would agree that homemade doors look better on the traditional TD's. I just think that the manufactured doors give the weekender a more professional look.
6. Battery - if you decide to use a battery system, I highly recommend a simple battery box on the tongue. It provides the tongue weight you need for a stable ride and eliminates the problem of dealing with venting in a closed compartment inside the cabin.
7. Tires - I have never had a problem with the stock 12" trailer tires that come on the NT trailer (I've had them on my old HF utility trailer for years), but I decided to upgrade to 13" passenger car tires for the added peace of mind and smoother ride. My weekender was really bouncy with the stock tires and the larger, softer tires have eliminated all that.
8. Fantastic Fan - I'm a fair weather camper so I don't need an AC unit. The Fantastic Fan is perfect for ventilation on warm days and, in my opinion, the Ultra Breeze cover looks great with the lines of the weekender (it doesn't really go with a traditional look, but it is easily removed). My main purpose in using the Ultra Breeze is to keep ventilation during a heavy rain and on those really cold nights to avoid the loss of ventilation in the very tight cabin.
9. Progressive Dynamics Converter - if you decide to go with an AC/DC system, this is the way to go. It is a very reliable unit that keeps your battery charged while providing easy distribution of all your AC and DC power.
10. Trailer Wiring - I highly recommend running your trailer wiring inside conduit and, preferably inside the cabin. It makes the wiring look a lot neater and provides easier access for future work or maintenance. Also, I would run a dedicated ground to every light and fixture. Don't rely on the trailer frame for grounding.
I'm just throwing these thoughts out there for anyone who might be thinking about a new build. If you want to see details of my build you can go to my build journal at: viewtopic.php?f=50&t=49333&hilit=les45
Here are a few pics of the final build: