J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Traveler set-up, again

I've researched but, once again,

1. If you could re-configure your traveler set-up, what would you do?

2. If anyone has a harken windward car, what model fits our track?

3. Are the sheaves in our original cars replaceable?

I have alot of ideas but I'm leaning toward a continuous loop, with double cheek blocks on the end with double cam cleats vertical and horizontal, so i could lock, unlock from either side. Please all input is appreciated.