WalMart sells 2 versions of the slingshot. Don't waste your money on the folding version. I first bought the folding one thinking that it would be more packable. - it was a total failure when I tried to modify it.
For shots of 50-60 feet, with practice, you may be able to get a shot up without the reel etc. I've been able to use my slingshot effectively with just smaller homemade bags and my regular throw line. I position my line bag in front of me so that the line spools out cleanly, like when I throw by hand.