My bikes are locked in a garage BUT when out on the road and not having access to a garage this is what I do.
Full coverage insurance plus 2 disc locks and a cable. I lock both bikes together through the frame so at least they may have to pick up both bikes at the same time unless they are equipped to defeat the locks/cable.
I try to always get a room that I can see the bikes and I check on them as much as I can.
That's pretty much all I do...so far...so good.
From this place...
http://www.trimaxlocks.com/index.asp
Here is the disclocks I use and the cable I use...seems to be pretty decent stuff.
The MAX60 is a short shackle motorcycle disc cable U-lock. TRIMAX cable U-locks are simply the strongest short shackle locks you can buy.
The MAX60 is ideal when combined with a TRIMAX cable or chain for securing motorcycles, bicycles, spare tires, ATVs, marine, trailers and much, much more.
Features one key equipped with a mini flashlight
Durable PVC sleeve covers chrome steel shackle to prevent marring and scratching
Hardened solid steel lock prevents prying, sawing and hammer impacts
Tough polymer outer skin absorbs hammer strikes and reduces marring and scratching
Ideal for bicycles, motorcycles, spare tires, trailers, marine and more
Type B key, which is an ultra secure wise wafer key. Lock core design provides the highest degree of protection against picking. Includes 3 keys. One key is equipped with a mini flash light.
Specifications:
LIFETIME WARRANTY
1/2 inch hardened chrome plated solid steel shackle
The TG3072SX is a SUPERMAX security armor plated stainless steel locking cable (6 feet long x 26mm diameter) for maximum protection and security.
The TG3072SX is ideal for securing motorcycles, bicycles, spare tires, ATVs, marine, trailers and much, much more.
Monster 26 mm stainless steel locking cable
Maximum security armor plated cable lock
Durable PVC skin prevents scratching
Ballistic grade polymer lock housing cover resists hammer strikes and protects lock mechanism
Patented key cover resists grime and moisture
Flexible for easy transport
Ideal for bicycles, motorcycles, spare tires, trailers, marine and more
Type B key, which is an ultra secure wise wafer key
Specifications:
LIFETIME WARRANTY
6 feet long x 26mm diameter
Heavy duty
Commercial grade
Stainless steel