If you go to an automotive supply store, you can buy drains similar to the first place for a lot cheaper. They will look slightly different, but they accomplish the same job.
The second one looks OK, but that is a lot of money. If you need to drain your boat many times a year, it would be good. But if you do it once a year, that seems like a lot of money and effort. Just my opinion.
1997 MasterCraft 205
2008 Moomba Outback
1999 MasterCraft Sportstar OB
1992 MasterCraft 205
1999 Malibu Response LX
1987 Marlin Magnum Skier