I looked up the Sears tank, It is $40 in the last Tool Catalog I have. It is a 9 Gallon tank and can be pressurized to 125 psi. Has a tire nozzle, short hose, and gauge. I have one and it works good. I do, most of the time use a small 12 volt compressor to pump up the tires in my truck after I come off the sand, takes about 15 minutes to do 4 tires. If anyone is interested in the tank let me know I will find the Model No. Please be careful using a float tube! Whether it is boats, or scuba I can usually find a way to get in and out of trouble. Do not use an old Scuba tank, Do not leave any tank full of air in a hot trunk, it might go boom!