Piece of cake, especially since the Infusion has straight beams.
Ghetto double-stack:
1. Get two, eight-foot long 2x4s and a bunch of old towels (and 4 old PFDs are a bonus). Also, get lots of tie-downs and extra line.
2. Remove rigging from both boats.
3. Tie the bottom boat to the trailer.
4. Put the 2x4s on the deck of the bottom boat, usually just inside the front and rear beams. You are using the 2x4s as crossbars here. Wrap towels around the 2x4s where the boats will contact them. If you have spare PFDs, place them between the decks of the bottom boat and the towel-wrapped 2x4s.
5. Place the top boat onto the towel-wrapped 2x4s. Adjust spacing of the boards and padding as needed.
6. Tie the boats together (at the 4 corners of the tramp). This is very important, as you don't want the top boat sliding around, which it WILL do if you only tie it straight to the trailer.
7. Tie the top boat to the trailer. If you're going a short distance, one line from the center of the front beam to the trailer would suffice (basically a safety line). For longer trips, I have tied all corners of the top boat to the trailer (although some would say that this is overkill).
8. Double-check the routing of all the tiedowns. You dont' want to overlap any, as they will chafe and may break.
That's basically it. Some other things to consider:
Some folks swear by removing the tramp of the top boat to reduce drag, especially since H16s have raised tramps and curved front crossbars (raising the front of the tramp even further).
You'll need to sort out where to tie the masts. Sometimes you can tie them to the bottom boat, sometimes to the top.
Stop frequently (once an hour for the first few hours anyway) and check all tiedowns for looseness and chafing. Normally, the loosening only happens in the beginning, and once you adjust/tighten a few times, they tend to stay put.
Having a Nacra and a Hobie in such close proximity may cause spontaneous combustion, especially if anyone sees you pull in at the regatta.
Hope this helps.
Mike
