Adding More Weight

I've noticed recently with Nubs, he really gets bored pulling for long periods of time, so when it comes to our scootering, he gets bored of it after about a half mile. Nubs just was no longer getting tired pulling that scooter, so today I decided to add some weight to the scooter. How to do it was the question.

This is the scooter in question (an older photo of it):


So I grabbed an old gym bag and put some patio blocks in it then using in an Ella's Lead hooked the bag up to the scooter like so:


After he pulled me and the scooter I decided to weigh the 2 patio blocks. 30lbs extra on the scooter. He's up to about 150lbs at about 1 mile+ Not to bad.