I used to leave the tupping to my rams, not personally!
Regarding raddle, always mix with veg oil, Lidls do some cheap stuff dont nick the wifes like I used to,start with the lightest colour and work to the darkest so you can see if any ewes keep returning. Too many and there is a problem either with the ewe or the tup!
I used to go yellow-blue or green, red, black and change the colour every 14 days, ewes cycle about 17 days, so you can observe any repeats.