I tried out and it fired Geirskogul right after the 4th Jump/Spineshatter, but before the Mirage Dive fired, essentially wasting 35sec. I've made an edit that dealt with that issue, but that made it not fire Nastrond at all. I didn't have time to play with it more due to IRL stuff. This is the thing:
[CODE]        private async Task<bool> Geirskogul()
        {
            if (Shinra.Settings.DragoonGeirskogul && Core.Player.HasAura(MySpells.HeavyThrust.Name))
            {
                if (!RecentJump && NumEyes == 4 || JumpCooldown > 30 && SpineCooldown > 30 || Core.Player.ClassLevel < 70)
                {
                    return await MySpells.Geirskogul.Cast();
                }
            }
            return false;
        }
[/CODE]


What this needs is a check for LotD - if LotD up, fire Nastrond(Geuirskogul) on cooldown. Currently too drunk to make that happen tho. :) Also changed the jump cd conditions to 30sec because, err, reasons? That one will require some more testing. Hmu with discord info if you use that, I'll gladly work with you on this.