Shooting houses? As in trap houses? Good for you! Are you building them for the club?
I haul the bigger stuff on a trailer if I have to, but I can still load two bikes safely on either side of a Harley and still have room to stash a bunch of stuff in the cab and bed. I'm a recovering tool junkie and when I go out to do a job...any job...I have a tendency to haul enough tools to restore a 1921 Pierce-Arrow AND install BB86 bearings in a frame.
Bumper towing a trailer shouldn't have enough tongue weight or loading/unloading restrictions to stop a guy from hauling the bikes in the bed on one of those simple and easy bar racks that use the fork to lock the bike in place. A 5th wheel? yeah, there goes most of the bed space right now. Not much can be used if that's the case.
Even a slide in camper should have enough open space in the aisle to carry the bikes safely and out of the weather (Noted: Alabama has WAY better winters than Ohio!).
I like the newer travel trailers and Class 'A' motorhomes that have built-in toy boxes for a fella's guns, motorbikes and ATV's/UTV's in them and that may be my next move as retirement looms on the horizon.
Here's some more ideas for you, including a Tundra with a front mounted Swagman rack:
http://www.truckcampermagazine.com/weekly-blog/bike-solutions-for-truck-campers Lots of pics of front mounted rigs on this page to get some ideas from.
I think the weirdest thing I've seen was some obviously well-to-do old retired coot that had a Prevost class bus type motorhome. He was towing an enclosed trailer toy box that was about a mile long (probably had an SUV, a motocycle, an ATV AND a boat in there!). Even with all the money and room inside a setup that was longer than a Great Plains Peterbilt dragging a 53' van trailer behind it. he still had a couple of bikes lashed to the roof ladder of the trailer.