if your going to try filling the cracks use the hot rubber product which they do sell at lowes.I have been in the business my whole life.for the alligator areas what I do is fill the kettle up(which lowes sells or they did) make sure area is clean and dry once it gets up to temp around 350 -400 degrees poor out a puddle in the area and spread it with a squeegee while its still hot apply dry sand to the surface let cool alittle then hit the bleeders with sand I use play sand you can use black beaty at 3 times the price if your not going to coat it. the sand is for traction and on a hot day gives you that barrier so it don't tear up on shoes and tires. this method I think looks the best and the hot rubber works the best any cold pour application will fail.caution this will create a smoother and slicker surface so use caution especially in the rain, or up hills in snow,motorcycles use caution in wet conditions,good luck.you can use a more course sand for more traction but make sure its dry any moisture and it wont bond