Pilot_DAR wrote:
A friend was set to replace two worn out main tires on his 150, so I took him for some crosswind circuits, when there was no wind
Seems there is a lot of good things about it besides “correcting for crosswind”, touching on one wheel while on sideslip does helps attenuate landing pitch and lateral PIOs, maybe lot of it depends on suspension and the type
First, there is less tendency to bounce on sideslip landings but you get lateral wiggles instead (so you may have to switch from left to right rudder or keep left and swap the tires for an even wear 
), Second a hard slow landing on sideslip on one wheel always feels much softer than a hard slow landing on two wheels coordinated (self correcting with extra lift from levelling the wings?) while a hard fast landing on sideslip on one wheel is always live compared to a fast landing on two wheels coordinated, the latter is never good for either saying in contact with the ground nor keeping it along the runway line…
Cross-controls helps you to keep better lateral stability and stick you to the runway on ground contact but there is a limit to this in terms of faster touchdown landing speeds ASI & VSI (same effect is felt by crabbers, they fall to the ground and stick it when they “kick the drift”? as they are turning away from large headwind component as they touch the ground?)
Someone highly advised no to not use flaps as dynamic control on takeoff/landing 
(e.g. put them down to pop up in the sky on takeoff or up to stick on the ground on landing, they are “static controls” you select them on a given position and that is it ), but one can always do “dynamic flaps” with sideslip even with no crosswind for stability, the cost is unlike flaps it will most likely always increase your ground roll…
