My son was at a Canlan camp last week that used parachutes-I saw first drills. Its basically resistance training, instructor explained chute is similar to skating against rubber bands but players stay more in proper technique (skating posture) so more beneficial.
They had kids skating laps with chutes-most struggled to keep the chute airborn
The 2-3 more advanced/faster skaters said it created a drag, they did 2 laps then dropped chutes and did 2 laps without-my son said he felt 'real fast' without the chute.
Even kids who couldn't keep chute in air got a workout trying to so its great for a hockey camp-these chutes were not very big, 3-4'.
Where can you use it privately-would draw a crowd at stick & puck.