Figure 10. Gromzer 2 + 1 fin configuration. Gromzer may be configured to ride with a larger center fin and relatively smaller rail fins to suit certain conditions. Such configuration may be described as a Widow Maker or ‘two plus one’ set up and is generally considered appropriate for more powerful conditions. Again, hohar laboratories does not necessarily advocate the depicted templates or sizing, but rather provides Figure 10 for illustrative purposes only.