I have a JRP with just a little reverse taper the first 2 " of the trunk. Someone at out last club meeting someone said that you can use an exacto knife and make multiple 360 degree, vertical cuts into the bark on the skinny part of the reverse taper. And when it heals, the bark has thickened and no scarring since the cut was so thin.
Anyone know or hear about this? Oh, he also said not to use the hammer technique on pines...which I hadn't heard before??
The other fix I heard was from someone who learned this from Kathy Shaner who carves ovals into the skinny part of the reverse taper and when it callouses over, no more rev. taper. I'd much not rather have two scars on the lower trunk.