I ventured down to the local white water centre which; is a place that I've not bothered to visit for photography purposes before today. I now think I may visit more regularly. However looking at these images on here via Flickr, I think I may have to practice my processing for images for this type of sport as these seem a tad over sharpened but...the edited images in Lightroom look fine
After a nights sleep and reading all of the comments on this thread, I decided to reprocess and not crop or sharpen (apart from capture sharpening at 25% which is automated in LR) the original raw files and repost them against the originals I first posted. I've not tried editing a post and adding additional images before I hope I don't make a mess of it. I shall also add one other image showing a different water vehicle.
Thank you everyone who commented and added advice I really appreciated them all
#1 Water in my helmet
ISo100, f6.7, 1/2000 sec
#1 version 2
#2 I'll close my eyes and concentrate
ISO100, f6.7, 1/350 sec
#2 version 2
#3 Hands up
ISO100,f6.7, 1/1500 sec
#3 version 2
#4 Apply the brake
ISO100, f6.7, 1/250 sec
#4 version 2
#4 Group Bonding, added as it shows a little more of the environment.
_V1A7380-Web-Edit.jpg by Peter Stockton, on Flickr