Ajax: Well, I finished. Don't know how long the tape stuck, but it was totally loose & came off with my socks when I removed them at the end - however I hadn't been aware of it slipping or moving. The first ankle-deep water was within the first mile, and there were more wet bits later (nearly up to my knees across a flooded meadow before CP5). Tendon started hurting before CP2, on a long stretch of very muddy, slippery bridleway. Unfortunately this threw my gait/running style off and I must have started heel-striking rather than midfoot landing, which was a real problem because of most of the course being diverted onto road (and my uncushioned trail shoes). I realised what had happened when my heels started to hurt. The bruised heels meant my pace dropped off, particularly towards the end. I could barely hobble (I wouldn't have called it walking) around the house on Sunday. I've been icing the tendon and the heels. Right heel is pretty much okay as of this morning and the left foot is much better than it was. Still icing the tendon. Twitching to be running again - the leg muscles are fine!