I own a small company in a resort town that rents beach stuff (chairs,umbrellas,rafts etc) and want to start renting bikes. Can anyone give a bike newbie some advice as to what kind of bikes would be best as beach rentals and some suggestions on where to buy 100 bikes wholesale(used would be best)? I would need mostly beach cruisers but will need some mountain bikes and tagalongs too. These bikes won't last more than a few years with the salt water and sand so I'm not looking for the best bike, just a bike that is sufficient for my beach clientle. Thank you.