I used to work for a boatbuilder who used Beta strip all the time, very good product. Think the glue was a Bostick type.
Prep the boat well by masking off the area to be glued,abrade the gell with sandpaper and remove dust.
Put glue on both surfaces and leave to almost dry.
Start at the bow if doing the keel and have a helper to hold the band away from the boat while you place it onto the glued surface.
Hold down band with duck tape or a very good tape that sticks to gell.
When you get the Strip, cut to length and shape the ends with sandpaper, then put in hot water to soften,dry and pull out straight till cool.
C P 🙂