Hi Guinness
In this particular cache, the cache itself is a bonus, not the goal. I prepared 16 points along a route that with GPS set to "shortest distance" creates a nice biking route. It does not require to go off the bike, and all via points clues are very easy to find.
Set up is like this:
"What's the number of the postbox you are seeing = xx (2 digits)
"Fill in this number on the following positions"
N 5.12.345 E004.12. * * 5
So the most parts of the coords are visible, only the missing one or to has to be found on the spot.
Works perfectly. I let 3 people trace the route to exclude errors by now, so the set up is tested. All via points are on normal open roads, with parking or stopping space.
It's really a fun way to ride a bike! And no one knows the route in advance, so it still has the surprise element like a cache hunt. And at the end there is the cache (now waiting for the reviewers to clear) :-)