I have a Ruffmaxx from Cabelas in Large & Travel Aire in XL. Neither are the most solid available but you also have to take weight into consideration. The Large carries a 65lb dog & the XL a 74lb.
Yes just freeze the water the night before you travel. Most pet strores sell bowls made to hook onto the door. If its for the lab in your avatar get a decent size bowl similar to something like this:
https://www.pettravelstore.com/pet-crate-bowl/https://www.amazon.com/Miller-Manuf...mp;psc=1&refRID=CY7A2VBEX64M7FGZHFA6
