I've got the new boat, but now that it's bigger and heavier than the old 16' starcraft, moving the boat around in the driveway is just ALL KINDS OF FUN!

I had my wife helping me this weekend, and in between the terets episode, I managed to torque my shoulder too. The plastic wheel on the jack is useless. I either need a dolly to hook up to the tongue, or a good rubber tire, the plastic one is now missing 1/2" of material on one side, so it won't turn even if I beg it nicely. Anyone have some good inexpensive solutions. Cabela's sells a nice dolly, but the price hurts me.
Thanks,
GBS