Huge congrats on the progression.
Having done some biking with Ky ... I'll make two recommendations (which you can take or leave at your will!) Also, don't know if you have ever done this ... so my post could be completely useless!!!!
I bought a harness for Kyleigh to bike with. 2 reasons - she was already trained to pull the sled in the winter so was comfortable with the harness ... and 2 if we were ever in a situation where I COULD let her pull me, I wanted to have that option (I AM out there to exercise my dog after all LOL)
My second option would have been (had the harness not worked) a quick release for the collar -- in case you crash or something ... it's so the dog doesn't choke.
It took me about 4-5 times of biking with Ky before she got the hang of it - stay away from those wheels doggie! But now, when I take out the harness she KNOWS what's coming up and is pumped.
Best way to tire your pup out is with a bike!
You also have to watch their paws. I bike on the sidewalk (oops!) and Ky is on the grass for about 90% of our bike ride. I live in suburbia and don't bike very fast - just enough to keep her from wanting to wander! A 30 minute bike ride is enough to tire her out.
If I'm on a certain street and there is zero traffic coming, I will tell her to go ahead, and let her pull me ... she JUST LOVES that!!!!
Have lots and lots of fun!
Marionís Zoo-Kyleigh, Raylan-cat, Echo-TAG,