Hi Gee, no not trolling.
warm socks on (winter PI ones that come up quite far on the leg), then tights over the socks so gripper is on sock, then shoes then overshoes over the top of whole lot.
perhaps becuase your using boots and it is moving then up as you pedal, perhaps try a longer sock?
you could always add some stirrups? also could add a layer of leg gripper to the bottom? I bought some when I converted som 3/4 bibs into longer shorts. if you want a length i could post you a bit.
as a note as you also seem lanky found the fleecy tights (as apposed to the windproof) better to ‘stretch’ into the right shape i.e. tall but thin, the more weather proof ones tend to be less stretchy so less good at doing this.
Si